Found three more babies in the same cave. Just a little history. Where the babies are it use to be a frogspawn colony before 2010. In 2011 the only surviving frogspawns are the adults you see among the skeleton structure which were transferred to this 44 gallon bare-bone backup/emergency tank. It has one power head (which will be replaced with a gyre), a old HOB and AI Vega light. Its been 8 years so I don't know how these are forming.
Just found another baby frogspawn. Also there are brown spots on the skeleton and I was wondering if it might be possible these are planula larva? I've seen them for about a month or more. They don't move so there not flatworms.