CaribSea® Aragamax Sand
Dry sugar-sized aragonite sand substrate for marine aquariums
Functional marine substrate buffers aquariums from pH swings
Fine grains pass easily through sand sifting aquarium inhabitants
| Grain Size | 0.25 – 1.0mm |
|---|---|
| Best Use | Shallow static beds and bottom covering up to 1″ in depth |
| Special Feature | Naturally aids in reduction of nitrates |
| Compatibility | Smooth, round grains pass easily through gills of gobies and other sand-sifting organisms |
FAQ
What is the grain size of CaribSea® Aragamax Sand?
The grain size is 0.25 to 1.0mm, making it sugar-sized and suitable for shallow marine aquarium beds.
Does this sand help with water chemistry?
Yes, it naturally buffers aquariums against pH swings due to its aragonite composition.
Is it safe for fish that sift through sand?
Yes, the fine, round grains pass easily through the gills of sand-sifting organisms like gobies.

Julia Robertson –
The sand settled well in my 55-gallon tank. My gobies are active and not stressed. The water pH has remained stable over the past month. Easy to maintain and clean.
Warren Russell –
I used it as a base layer in a shallow sand bed. It’s fine and smooth, and the fish don’t seem to have any issues with it. Nitrate levels have dropped slightly since adding it.
Dan Lawrence –
Great for a low-maintenance setup. The sand doesn’t clump and stays evenly distributed. My tank has been stable in pH and nitrate levels for over two months.