Hi Jerry, I have been using Fluke tabs at full dose. The little green beasties I have are really tough. They keep coming back from somewhere. Since I have not introduced anything new from outside to these breeding tanks, hydra are simply migrating around from one tank to another. They must be hitching a ride on the pipettes and the turkey baster I use for feeding the daphnia to my fish. I end up sucking some water into the pipettes when I squirt daphnia out of it. I know, I need to stop dipping the tip of the pipette into the tank to break the cycle. My aggie female is still guarding her eggs as of this morning. I suppose she has not noticed any physical changes in these eggs. Hope these eggs will hatch. She is still taking care of her two weeks old fry, too. I am curious to know what she would do with the older ones when these eggs hatch. Since my borellii trio successfully raised three generations of fry together in the very same 20GL, I am hoping that this aggie pair would, too. Tomoko ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. apisto-digest@listbox.com also available. Web archives at http://lists.thekrib.com/apisto Trading at http://blox.dropship.org/mailman/listinfo/apisto_trader