Aquarium Breeding Grass

This is a Walmart product for fish tanks. It comes in a square that can be snapped together with other squares. I tried floating it the first time I used it. The Molly Fry liked to hide in there from the bigger fish. The next time I changed out the tank, I placed it on the gravel and anchored it down with loose gravel. The babies hid in there just as much as they did with the floating method. I loved this for new fish. Have not tried locking some together, but would try it with the gravel method next time I have new little fish.

Pros: can be used floating or on gravel

Cons: not available everywhere