A nifty sponge that is said to remove nitrates has our attention. The sponge which is supposed to be for the “Juwel” aquarium system can easily be used in a sump or other filter design. “The Juwel Nitrate Removal Sponge…
A nifty sponge that is said to remove nitrates has our attention. The sponge which is supposed to be for the “Juwel” aquarium system can easily be used in a sump or other filter design. “The Juwel Nitrate Removal Sponge…