CaribSea Super Naturals Moonlight Freshwater Sand, 20-lb bag
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Re-create the natural world of your finned friends with CaribSea Super Naturals Moonlight Freshwater Sand. This beautiful, natural uncoated river substrate offers a finer grade of natural sand, packed with living, water-purifying bacteria, state-of-the-art clarifier and a complete water conditioner. With Moonlight Sand all you need is tap water to get started, plus sand-size grains are friendlier to bottom dwellers. The approximately 0.25-0.75 mm grain-size immediately begins the cycling process, eliminating new tank syndrome and discouraging nuisance algae. The freshwater sand is great for detoxifying metals, eliminating ammonia, neutralizing chlorine and chloramines, plus it provides a protective slime coat for stressed fish and reduces nitrates and nitrites.
Key Benefits- Beautiful, natural uncoated river substrate that offers natural sand, packed with living, water-purifying bacteria, clarifier and a complete water conditioner.
- Sand-size grains are great for bottom dwellers, plus it’s easy to create a natural habitat—just use tap water to begin.
- Approximately 0.25-0.75 mm grain-size, it immediately starts the cycling process by eliminating new tank syndrome and discouraging bothersome algae.
- Perfect way to detoxify metals, eliminate ammonia, neutralize chlorine and chloramines, for a safe environment.
- Provides a protective slime coat for stressed fish, plus it reduces nitrates and nitrites, which can have a negative effect on fish, plants and the aquarium environment in general.
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Item Number147335
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Weight20.0 pounds
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Aquarium TypeFreshwater
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Fish TypeTropical Freshwater
Gently rinse with clean, warm, freshwater, then place into the aquarium. Add water, then rocks and décor. Start all filters and pumps. Read directions on the bag before use.
Typical Sand Size | Average Density |
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0.25-0.75 mm | 95 lbs per cubic foot |
Customer Reviews

80% Recommend
80% of reviewersrecommend this product
You've Already Reviewed This Item
10 Reviews
10 Reviews
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Great Sand
By PamB on May 10, 2019
our package arrived on time and just as described. I never knew you could have sand for a freshwater aquarium and this is made for it. It helps keep your tank clean and free of nitrates/nitrites also. I would always recommend anything Chewy sells. Chewy always ships on time and has great products!
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so pretty!!!
By katiebeanx3 on May 9, 2019
I can't believe i've been a fish hobbyist for over 10 years and am only now using sand... SO much more attractive, my goldfish are so happy! LOVE IT.
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I loved it
By Frank on Mar 7, 2019
I was scared to buy at first because of reviews but I just dumped the dry sand damped it a little in my tank then decorated a little, then filled it up by pouring the water on bowl, it was a little cloudy for about 2hrs but when it settled it looked wonderful and was ready for some plants and fish!
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It’s not white
By Bella on Mar 29, 2019
On the picture it shows that it’s white. When I was washing it it stayed baige color not happy about and wished it said something about what color it’s going to be after getting it wet.
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Not really sure if I like product.
By Jeannie on Dec 28, 2018
I called and talked with customer service. We decide this was what I needed for new tank. But sand was so cloudy even after rinsing it well. Some floated on top for weeks. Tanked cleared up once filter ran for a few days.
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Love it!!!
By Buckboy on Jan 26, 2019
I Used 1 and a 1/2 bags for 20 gallon tall so i could have a deeper sad bed it is a fine sand!! So it took 3 days to settle
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Awesome substrait for aquriums
By Sundog on Dec 22, 2018
This is awesome easy on the fish and eyes. We bought the black and white for my 75 gal aqurium and mixed them. Its has this really cool marbled effect to it.
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Natural Look!
By Grace on Jan 10, 2019
I used this in my 10-gallon aquarium and it added such a nice, natural look to it. 10/10 would recommend.
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An excellent product
By Kris on Sep 12, 2018
I love this sand! Upon getting it I followed the instructions on the bag for washing it then drained my tank till there were only 2inchs of water left. I put the sand in then drained a little bit more water before filling it. When it was filled I added the clearifier packet and within a few hours it was cleared up. My axolotl loves it.
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Do not recommend
By Mary on Jul 21, 2018
The sand was so fine, the tank kept getting cloudy when the filter was on. Ended up changing the water 4 times before discarding the sand and getting something else.