Choosing the right substrate is one of the most important things you can do to establish a healthy and stable reef tank. Purchasing live sand will speed up the time it takes for your tank to cycle. This will allow you to add fish and coral sooner, and live sand will also keep your water parameters stable, so you will be less likely to lose any fish or coral. Our top pick for the best live sand for a reef tank is Carib Sea Arag-Alive Fiji Pink Sand (Buy Online).
Best Live Sand for a Reef Tank
Live Sand Reviews
Carib Sea Arag-Alive Fiji Pink Sand
Carib Sea Arag-Alive Fiji Pink Sand (Buy Online) is the best way to bring the exotic look of Fiji right into your reef aquarium. This live sand contains “Arag-Alive” which has the perfect balance of bacteria and other microorganisms to start off your reef tanks cycle. Arag-Alive will also help maintain proper water pH for the life of your aquarium.
This live sand has an off-white color with a subtle hue of pink to add a nice touch of color to the base of your aquarium. That makes this sand a great choice if you want something a little different then just a plain white sand substrate. Carib Sea Arag-Alive Fiji Pink Sand also contains Aragonite which is a rich source of trace elements and minerals. The calcium content of this sand alone is 381,000 ppm, while the carbonate level is 590,000 ppm. Along with that, there are trace amounts of strontium, magnesium, molybdenum, and potassium in this sand to help keep your coral healthy and growing.
This live sand contains fine to medium grains, so you need to take that into account when you add it to your reef tank. Some clouding will occur when you add it but it should settle in about a day. Each bag of Carib Sea Arag-Alive Fiji Pink Sand comes with a small packet of liquid clarifier, so if you are in a hurry you can speed up the settling process. If you plan on running a high flow tank, you might want to go with a coarser sand since this sand might move around in a high flow environment.
Carib Sea Ocean Direct Substrates
Carib Sea Ocean Direct Substrates (Buy Online) is perfect if you need a high quality live sand for a marine aquarium. This sand comes in original grade, which means it still has some pieces of crushed coral mixed in with fine grain sand to give a more natural look to your reef tank.
Carib Sea Ocean Direct Substrate has a white to off-white color which makes it the perfect backdrop for any kind of aquascape. Since this is a natural product color will vary, so you might get some bags that look a little beige while others will be pure white. This shouldn’t be a problem when you buy multiple bags since the colors will blend nicely when you mix the sand together.
This live sand does contain fine grains of sand, so you need to be careful if you run a high flow reef tank. If the flow is too intense the grains of sand can be blown around, and this can lead to sand dunes forming as it shifts in the aquarium. If you plan on running a high flow tank then you should go with one of the coarser live sand options in this article.
Nature’s Ocean Bio-Activ Live Aragonite Live Sand
Nature’s Ocean No.0 Bio-Activ Live Aragonite Live Sand (Buy Online) is a beautiful white sand that will make any reef tank look incredible. This sand is made up of Bio-Active Aragonite with a small to medium grain size, which makes it perfect for almost any type of reef tank setup.
If you want a nice bright white sand than this live sand is one of your best options. The color uniformity of this live sand is much better than most other “white” live sands on the market. That makes this sand the perfect backdrop for your coral colonies since the uniform white color of this sand will make a perfect backdrop.
This live sand has been carefully collected and packaged to ensure you get a fully colonized live sand upon delivery. The grain size of this live sand ranges from 0.1 to 0.5 mm, which means it is a little coarser than some of the other live sand options in this article. That means you can use this sand in a medium to high flow tank without needing to worry about it being blown all over the aquarium.
Nature’s Ocean Bio-Activ Live Aragonite Beach Live Sand, Black
Nature’s Ocean Bio-Activ Live Aragonite Beach Live Sand (Buy Online) is one of the best live sands for a nano reef tank. This black live sand is the perfect substrate if you want to simulate a volcanic beach in your aquarium.
The black sand will make any rock work and coral you add to your tank look even more vibrant under optimal lighting. This sand also comes in small 10 pound bags, so if you want to mix it with another type of sand you can do that also.
This live sand like all other Nature’s Ocean products contains an excellent mix of nitrifying bacteria. Live aragonite sand will also help keep your reef tanks pH stable since it acts as a buffer to control swings in your reef tanks water parameters.
Nature’s Ocean Bio-Activ Black Live Sand is also perfect for high flow reef tanks since the grain size is 0.5 to 1.7mm. That means this sand won’t easily blow around, so you can run your powerheads at full power. This sand might be a little too large though for certain fish that like to burrow, or for fish that filter sand through their gills for nourishment.
Carib Sea Arag Alive Indo Pacific Sand
Carib Sea Arag Alive Indo Pacific Sand (Buy Online) is a black and white sand mix aquarium substrate that will stand out in any reef tank setup. This sand is perfect if you want to add a touch of black to your aquarium, but you’re not sure if you want a completely black sand reef tank. The salt and pepper effect looks very natural, and your tank will still look very dramatic with a perfect balance of color.
This caribsea black sand mix has all the same nitrifying bacteria you expect to see in a high-quality live sand. It also contains aragonite which will help buffer the pH of your tank and help add vital trace elements for your coral colonies.
This black and white live sand does have relatively fine grains though, so you do need to take that into consideration. That means this sand is better suited for low flow reef tanks, or in deep tanks where you can keep the flow from churning up the substrate. Other than that the Carib Sea Arag Alive Indo Pacific Live Sand is a great choice if you want to have a unique looking substrate in your saltwater aquarium.
Benefits of Live Sand

The number one reason most people use live sand is so they can jump-start their reef tanks cycle. By using live sand you are adding billions of microorganisms that will immediately start consuming ammonia from the water. That means you can add fish and coral sooner instead of waiting up to a month for an old-fashioned cycle.
Live sand also has a diverse range of microorganisms that can sometimes only be found in nature. These bacteria can be more efficient at processing waste than the bacteria that colonize your tank from your local environment.
Since live sand is basically ready right out of the bag, that means you can slowly start adding fish and coral as soon as possible. Of course, you should always test your water before adding any fish or coral to your tank to make sure your ammonia levels are acceptable.
Even though live sand can help speed up the cycling process it can still take a little time to get established. A good rule of thumb when you start a tank with live sand is that you should only add 1 inch of fish for every gallon of water. Once your tank is established you can increase that amount but you should always be careful not to disturb your reef tanks balance.
Adding Live Sand to an Aquarium
Mixing Live Sand with Regular Sand
There are a couple of things you need to consider before you add live sand to your reef tank. One thing you need to be aware of is that live sand is a little more expensive than regular saltwater aquarium sand or gravel. If you want to save a little money you can mix live sand with regular sand and still get the benefits of adding live sand to your aquarium.
How Much Live Sand
One question that commonly crops up is how many pounds of live sand will I need for my aquarium. While there is no single right answer a good rule of thumb is that you will need 1 pound of live sand for each gallon of water. This will be enough to create a nice even 1 to 2-inch layer of sand in most reef tanks. Although, if you want a deeper sand bed you can get 1.5 to 2 pounds of sand per gallon.
Water Cloudiness
One thing you might notice when you add live sand to your new reef tank is that the water will be very cloudy. This is completely normal, and in most cases, the particles will settle in a few hours. Some finer grain sand might take up to a day to settle though, so you should leave the tank overnight before you turn on any pumps or filters.
Certain fine grain varieties of Carib Sea live sand also comes with a packet of water clarifier, which can be added to your tank to speed up the settling process. If you prefer not to use a water clarifier you can rinse the sand in dechlorinated water. This will help remove some of the smaller particles before you add the sand to your aquarium. This is also a good idea if you are adding live sand to an already stocked tank since it will help protect your fish from any sand floating around in the water.









![Best Filter for an Oscar Fish Tank Oscar fish are voracious eaters that can grow to be up to 14 inches long. They need a lot of space and a big tank, but they also need good filtration. This is because Oscars produce a large amount of waste for their size, which can quickly pollute the water if not managed properly. Read on to see the best filter for an Oscar fish tank. [toc] Best Filter for an Oscar Fish Tank ***TABLE**** Best Filter for an Oscar Fish Tank OASE Indoor Aquatics Biomaster Thermo 600 The Aquatics Biomaster Thermo 600 Filter (Buy Online) has everything you need to keep water clean and healthy for your fish, plus some cool extra features too. It comes with four different filtration stages that remove debris from the water so your tank stays clear and safe for your fish to live in. Plus, it has a built-in heater which keeps the temperature of your tank consistent so you don't have to worry about fluctuations or sudden changes affecting your fish. The OASE Indoor Aquatics Biomaster Thermo 600 is a reliable and high-quality filter that will keep your water crystal clear. It has four stages of filtration, including a pre-filter module for particle removal, two main filters to clean detritus from the water before it reaches the pump area, an activated carbon stage with 45 ppi pores to trap organic chemicals and reduce odors, and finally a polishing cartridge which traps any particles left after the other three stages have removed most of the large debris. Plus, it comes with Hel-X Biomedia that has an extremely large surface area for beneficial bacteria colonies that break down nitrogenous waste. Overall, this filter can be used on 70 to 160 gallon tanks, and if you want peace of mind about how well your tank is being filtered and heated – this canister filter is perfect for an Oscar tank. Eheim Pro 4+ 600 Filter The Eheim Pro 4+ 600 Filter (Buy Online) is the best filter for an oscar fish tank because it’s easy to use and maintain while providing a high level of filtration. It has a self-priming pump that makes starting up very simple, plus its safety hose adapter means you won’t have to worry about any accidents with this unit. We recommend going with their Pro 4+ model which has been designed specifically for tanks containing Oscars and other larger species of fish. This filter comes with everything you need including extra media baskets, spray bars, adjustable flow control valves, and more. Polar Aurora 4-Stage External Canister Filter 525GPH with 9-watt UV Light The Polar Aurora External Canister Filter (Buy Online) is an affordable yet high-quality canister filter and it has four stages of filtration (biological, mechanical, chemical and UV) that keep your fish tank crystal clear without taking up much space. If you have an Oscar Fish Tank, then you know that they are messy fish. They produce a lot of waste and your tank needs to be cleaned frequently. That's where this filter comes in handy. It can handle tanks up to 200 gallons and has a maximum flow rate of 525GPH from the built in pump. This is more than enough power for even the messiest Oscar Tanks. This unit also comes with three different media trays so you can use any type of filtration media you want - bio balls, sponges or ceramic rings. And not only does this filter provide excellent water filtration, it comes with a built in 9 Watt UV Light that allows it to easily control algae spores/bacteria and maintain clear water in your aquarium at all times. Fluval FX4 High Performance Canister Filter, External Aquarium Filter The Fluval FX4 (Buy Online) is an external filter designed specifically for aquariums housing oscars and other large tropical fish species like cichlids and catfish. There's also three different filtration stages included in this setup which will ensure that all the waste produced by your fish gets filtered out quickly leaving behind crystal clear water every time. The Fluval FX4 is the best aquarium filter on the market because it has a patented self-priming pump that moves 700 US Gal of water per hour. It also comes with all of the media you need to get started filtering your tank immediately after installation - no extra purchases necessary. This external aquarium filter is easy to install, maintain, and clean. With its multi-stage filtration process this canister filter removes harmful toxins from your water while providing superior mechanical filtration through three stages of bio-filtration using BioMax cartridges, activated carbon pads and biological ceramic rings . This powerful filter pumps out 700 US Gal (2650 L) of water per hour so it's perfect for even the largest freshwater or saltwater tanks up to 250 US Gal (900 L) Best Hang On Back Filter for an Oscar Fish Tank AquaClear Fish Tank Filter, Aquarium Filter for 60- to 110-Gallon Aquariums The AquaClear 110 (Buy Online) is a hang-on back filter that has an adjustable flow rate, and it'll last you for years. AquaClear filters make it easy, convenient, and affordable to keep your tank clean without all of the complexity and hassle of a canister filter. The AquaClear 110 filter has been designed with the hobbyist in mind; and it provides superior mechanical, chemical as well as biological filtration media at an unbeatable price point. It's ideal for aquariums up to 110 gallons (416 liters) in size and it has a flow rate of 500 U.S. gallons per hour (1,900 L/h). SeaChem – Large Aquarium Fish Tank Filter, Tidal 110 Gallon The SeaChem Tidal 110 Gallon Aquarium Filter (Buy Online) is one of the few hang on back filters specifically designed for Oscars and other larger tropical fish tanks (up to 110 gallons). This means that it has more than twice the capacity of other hang on back filters so there's no need to clean out debris as often. It also has an adjustable flow control valve - just set the dial where you want it and let the self-priming pump do its job. You can also use any kind of filtration media without worrying about clogging since the patented impeller design keeps everything running smoothly Best Sponge Filter for an Oscar Fish Tank Bacto-Surge Hikari Aquarium Solutions Foam Filter, 125 Gallons Bacto-Surge Foam Filters (Buy Online) are made from a durable foam material which allows them to last much longer than traditional sponge filters. They also don't require any electricity or have any moving parts, so you can use these as a cheap and reliable way to supplement the filtration in your Oscar tank. Best Under Gravel Filter for an Oscar Fish Tank Lee's 125/135 Premium Undergravel Filter, 18-Inch by 72-Inch Lee's 125/135 Premium Undergravel Filter (Buy Online) is the best you can get for an Oscar fish tank. It has a multi-level plate design made of high-quality plastic, so it lasts longer than standard models. And this under gravel filter can also be used to build an anoxic filter to lower nitrates, which improves overall water quality and it will also help keep your fish healthy and disease free. Best Filter Media for an Oscar Fish Tank Premium Authentic Pinky Filter Floss for Fish Tanks Premium Authentic Pinky Filter Floss for Fish Tanks (Buy Online) provides two layers of filtration to keep your tank cleaner & running more efficiently than ever before. It's made in the USA from high-quality materials that are safe for both fish and humans alike. It also reduces maintenance time because it lasts 2x as long as other brands on the market today. AQUANEAT Aquarium Filter Sponge Open Cell Foam Sheet Bio Sponge Filter Media Pad Aquaneat's Black Fine Filter Sponge (Buy Online) is made with natural materials that are non-toxic and safe for fish & plants. It provides mechanical filtration by trapping dirt particles in the pores of the sponge material so they do not get through into your aquarium water where they could cause harm to your aquatic pets. The open cell structure of the Aquaneat Sponge means you can simply rinse it under running water when needed instead of having to replace expensive filters every few weeks. And we've tested these pads with many different types of tanks and they are one of the most durable and economical ways to keep the water in a fish tank free of debris. Seachem Matrix, 4 L / 1 gal. Seachem Matrix (Buy Online) removes ammonia, nitrite and nitrate from the water column in freshwater tanks through a process called denitrification. It does this by providing an environment where beneficial bacteria thrive and convert harmful toxins into less harmful forms (even anoxic bacteria that break down nitrates). This process reduces stress on aquarium inhabitants by reducing their exposure to these toxins while also maintaining pristine water quality in your aquarium Eheim AEH2507051 Mech Filter Media for Aquarium, 1-Liter Eheim Ceramic Cylinders (Buy Online) are reusable so you don't have to waste money on disposable filter cartridges or sponges every time you clean your tank. Simply rinse them out in decholorinated water when they get clogged, and you can reuse them indefinitely. Oscar Fish Tank Size A 70 gallon tank will work for an Oscar, but it's better to keep them in a 100+ gallon tank. The bigger the better. More space promotes greater health while also keeping them happier which in turn reduces the risk of stress and disease. Oscar Fish Water Parameters Oscar Fish Water pH Level Oscars prefer water with a pH between 6 and 8, but they prefer slightly acidic water and they can live in water that has a pH as low as 5.5 quite comfortably. Oscar Fish Nitrite Level The nitrite level in your tank should be at 0 ppm once your tank has cycled. Nevertheless, a weekly 10% water change with fresh water from the tap is always good early on in the cycle to reduce nitrites. Oscar Fish Nitrate Level To keep your Oscar healthy you want to keep your nitrate levels between 10-40 ppm. It's important that you test the water with a Nitrate Test Kit (Buy Online) to ensure the nitrate levels in your tank aren't reaching dangerous levels. If the nitrates in your tank stay consistently over 40ppm, it’s time to clean or replace old filters, clean out uneaten food, vacuum the gravel, and do at least a 25% water change. Oscar Fish Water Temperature The ideal water temperature for Oscars is 75-80 degrees Fahrenheit (23 - 27 Celcius). It's important to remember that Oscar Fish are from the Amazon Rainforest and they need a heater in their tank especially during the winter time If you want to know what size heater you need for your tank you can use our Fish Tank Heater Calculator (Click Here) Oscar Fish Water Change Water changes are an essential part of fish keeping for any type of fish. This is especially true when you have larger fish like oscars that produce more waste. Water changes, or partial water changes, should be done every 1-2 weeks depending on how many fish you keep in your tank Why Is My Oscar Fish Tank Cloudy Fish tank water can become cloudy for a few reasons. The most usual is that the aquarium is either experiencing a bacteria bloom or there is algae in the water column. If this is the case, you’ll need to do a 50%-75% water change immediately. You can also use an inline UV filter if water changes and regular tank maintenance aren't getting control of your cloudy water problem. How To Keep an Oscar Fish Tank Clean Water Changes Vacuum the Gravel Bed Cleaning the Filter Removing uneaten food from tank Check for any algae growth on plants or glass walls of aquarium and clean as needed Test the water regularly Do Oscar Fish Need a Filter Yes, Oscar fish need a filter because they are messy eaters that produce a lot of waste. The filter helps with this issue and also improves the water quality by converting harmful ammonia into less toxic nitrates.](https://thepetsupplyguy.com/wp-content/uploads/Best-Filter-for-Oscar-Fish-Tank-464x290.jpg)