CaribSea Super Naturals Moonlight Freshwater Sand, 20-lb bag

Skip image gallery
Slide 1 of 3
$19.99 Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card + Free Shipping with code: WELCOME
In Stock
FREE 1-3 day delivery on first-time orders over $35
Free 365-day returns

Pay in 4 interest-free payments on purchases of $30-$1,500. .

About This Item

Details

  • 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.

Instructions

Size

Frequently bought together

Questions & Answers

10 Customer Questions

Can I plant plants in this substrate? Will they grow well? I want white sand, but I want it to be able to grow plants well.

Answer by Chewy • Jul 19, 2019
This sand 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.

would this substrate be safe for my Red Eared Slider Turtle if it was accidentally ingested?

Answer by Chewy • Jun 28, 2018
The CaribSea Super Naturals Moonlight Freshwater Sand is safe to use with tropical freshwater fish only when used as directed.

Will this sand raise the pH of my water?

Answer by Chewy • Nov 25, 2018
This sand will keep your pH at a neutral level. This 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.

Is this sand for freshwater aquarium or saltwater?

Answer by Chewy • Jan 10, 2021
This sand is intended for freshwater aquariums.
Reviews
Write a Review
4.5
Rated 4.5 out of 5 stars
57 Ratings
Terms & Conditions

34 Customer Reviews

Rated 5 out of 5 stars
By latasha on Oct 31, 2025

nice

reasonably priced compared to other sellers. took some rinsing to get it clear after about 5 rinses I stopped counting its heavy when wet and trying to stir. got

reasonably priced compared to other sellers. took some rinsing to get it clear after about 5 rinses I stopped counting its heavy when wet and trying to stir. got in my tank it has settled nicely I recommend if your wanting to use this type of aquarium sand it works well for my 20gl long aquarium plenty of sand for a 20gl.

Rated 1 out of 5 stars
By Srider on Sep 13, 2025

Eh

Sand was white however the package was sliced open. I do like the grain size it's like a sugar texture, however the sand package was cut open and sand all in the

Sand was white however the package was sliced open. I do like the grain size it's like a sugar texture, however the sand package was cut open and sand all in the box

Rated 5 out of 5 stars
By Sara on Apr 19, 2025

Best aquarium sand

I tried this sand after not having good luck with other brands of aquarium sand for my betta's aquarium even after rinsing. I'll be honest, I didn't rinse this sand

I tried this sand after not having good luck with other brands of aquarium sand for my betta's aquarium even after rinsing. I'll be honest, I didn't rinse this sand before adding it to the tank and it did make the tank cloudy for about a day but after that it settled and the water was crystal clear. This sand looks very natural and has a good texture/color. It does tend to get dirty easily but I feel like that's an issue with any light colored aquarium sand. This is the only brand of aquarium sand I'll buy from now on.

Rated 3 out of 5 stars
By Charleen on Feb 7, 2025

Cloudy tank

I waited 24 hrs, not 20 min to add my fish. It's cloudy, and sand gets in my Whisper filter and it makes a noise. I took the filter out, rinsed the charcoal filters

I waited 24 hrs, not 20 min to add my fish. It's cloudy, and sand gets in my Whisper filter and it makes a noise. I took the filter out, rinsed the charcoal filters and all the sand in the filter. I am sad I got this . It's making more work and I can't keep up with it.I am disabled and was looking forward to a low maintenance tank. I can't find a phone no or website to call. I had rocks in my tanks for 30 years.

Rated 5 out of 5 stars
By Susan on Feb 19, 2025

Axolotls LOVE

Bought this for my Axolotl tank, they love it! Make clean up so easier. And looks great! Added sand during a water change and it made it super easy. They were in

Bought this for my Axolotl tank, they love it! Make clean up so easier. And looks great! Added sand during a water change and it made it super easy. They were in temp tank for 24 hrs and back home.

Rated 5 out of 5 stars
By Quentin on Jun 28, 2025

Great product.

No dust really didn't have to pre wash sand.

No dust really didn't have to pre wash sand.

Rated 5 out of 5 stars
By Joshua on Nov 8, 2024

CaribSea sand

I have a 75 and 20 gallon gravel aquairum and wanted to move my 20 gallon fish over to 36 gallon freshwater sand aquarium. I ran across this sand. I didnt follow

I have a 75 and 20 gallon gravel aquairum and wanted to move my 20 gallon fish over to 36 gallon freshwater sand aquarium. I ran across this sand. I didnt follow the directions to rinse the sand. I put it right into my new aquarium and used the bacteria speed packs. As i out the wayer in the tank i noticed gow fine it was but it settled rather quickly and the only cloudiness is actually from the bacteria trying to cycle through the aquarium. If your tank is cloudy it is mostly likely due to the bacteria trying to acclimate to the new tank and not the sand. It takes a tank generally 4-5 days for the bacteria to regulate and for the to clear once prime and stability have been added to the tank. I moved my fish over after 30 hours with the water slightly cloudy. I also moved my medium from the old filter system to the new system to make the transition faster. Fish are doing fine and they seem to enjoy the sand over the old gravel. Dont use screen style filters. Use live medium like rocks or ceramic pellets. This is much better for the aquarium and fish. Also much easier to clean and is permanent re-use medium.

Rated 5 out of 5 stars
By Lynne on Oct 3, 2024

Beautiful tank

The change from a black gravel mix to way more lightness & brightness. additionally, the betas, tetras, angels, & catfish seem to be much more animated and enjoyable

The change from a black gravel mix to way more lightness & brightness. additionally, the betas, tetras, angels, & catfish seem to be much more animated and enjoyable to watch. Followed bag directions, but took tank a day or 2 longer to completely clear. The change in texture of this material did not affect the vacuum ability to clean. Would purchase this product again and remain a faithful client of chewy.

Rated 5 out of 5 stars
By mgxq9tmj2v on May 26, 2025

Very quick shipping in great shape!

Beautiful quality and product!

Beautiful quality and product!

Rated 5 out of 5 stars
By Kimberly on Jan 6, 2025

Excellent sand

Super fine sand be sure to rinse first

Super fine sand be sure to rinse first