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Natural Substrate for Freshwater Aquariums
Ultum Nature Systems Controsand is a series of decorative sand substrates for planted aquariums and aquascaping. Specially curated in various granule sizes and colors, each variant contributes to a distinct aesthetic, enabling precise customization of your underwater landscape.
Choose from Accent Gravel for larger grains suited to complement existing foregrounds or recreate a natural riverbed, or Fine Sand for smaller grains perfect for various aquascaping styles and top layers.
Carefully Crafted Aquarium Gravel
Have that harmonious blend of form and function as Controsand not only beautifies but also nurtures your aquatic plants. Made from carefully selected fine stone and small pebbles, for durability and a pleasing look for your tank while meeting its demands.
Versatility of Controsand's Customized Substrate Options
Customizable substrate options are available for aquariums with Controsand. Whether you prefer fine or coarse textures or desire a specific color, Controsand is the ideal foundation for creating a visually stunning aquatic environment.
Andrea Burnside
September 3, 2025
I love this sand!! This is my first scape and I was very specific with what I had in mind. This sand is exactly what I wanted, a very natural earthy look paired with some red petrified wood. I have a 10 gallon rimless tank and the 3L bag covered it perfectly I have a little bit left over. I used a different substrate (fluval) to go inside the two cliffs to save sand. I didn’t rinse the sand and when I filled the tank it didn’t go everywhere or get cloudy at all. It’s super easy to move around.
Brooken
August 5, 2025
I bought this for my shrimp bowl aquarium and love the look of it. It is easy to vacuum without losing the sand. It does get stirred up when adding new water but settles quickly. I wish I washed it better the first time as it took a few days to for the water to clear up. It was easy to put some plants and most have grown and done well. I would definitely buy it again
tikki maas
July 23, 2025
High quality rock. I love this company. I'll never use anything else. I love all their products.
David B
June 30, 2025
I was hesitant about the claim that this sand does not need rincing but it is true. The sand gave off zero dust or discoloration to my aquarium. Comes in a variety of colors and grain sizes. I am now using it in two of my aquariums. Highly recommend!
Zachary Varner
June 18, 2025
This is probably my favorite substrate right now. Has a very nice rich brownish with hints of red. Pairs well with all kinds of wood and rocks. Like using this with Sante Fe especially
Customer
March 19, 2025
Besides the plastic ring, painted broken porcelain and snail shells in this bag. Rinsed rock gently but always a light brown tinge to water. Put in bowl, added water, cloudy brown water. Left 24 hours to settle, only slightly less cloudy. Added filter, only minutely cloudy but as soon as any rock moved, very cloudy. Took all rock out, WASHED with jetted water and swirling motion. Non-stop brown cloudy water. Some kind of soft rock that dissolves when agitated in the least in this mix. Would never buy again. Going to buy polished rocks, then I know I can rinse and rocks will be clean. Total waste of money. Zero Stars.
Jerry d.
March 18, 2025
It's a good sand. Granule size on the smaller size and the sand needs a couple of rinses. Color of the sand is as advertised, dark burgundy red giving your tank a very earthy tone.
David
February 10, 2025
Works well in my shrimp tank. I’ve had it for about and year and it still looks greats
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