Hey all! I was looking and did not see a thread on aquatic insects such as Belastomatidae, Nepidae, Hydrophilidae, Dyticidae, Gyrinidae, Odonate larva, and Megalopteran larva. I wanted to share my expirience with large Hydrophilids and I wanted to get some opinions on tank mates etc. So I introduced a diving beetle to my tank as an ammonia source mid cycle thinking I would throw a cricket to feed it. I was supprised when it ignored the cricket for the brown algae! I has been DESTROYING the brown algae. I have a mesh with java moss that was covered in brown algae and it ate the algae without damaging the moss. The beetle I have is 1.5 in and the hydrophilids are known to be scavengers or predaceous. What do you all think? Are there any other people keeping insects?