Bamf Comics
Fish Fanatic
I made these squares of 1/2" pvc to keep some Giant Duckweed coraled that hasn't arrived yet and it appears they've also created a no current space on the surface where the food is staying longer. Fish seem to be enjoying the addition. I had to add a piece of airline with a stone to the tubs to keep them on the side I want them. The size was precut for 20 gallon highs.