Once again, disaster has struck! I had to go o see the neurologist in St. Louis and was gone all day...since the wee hours of the morning today.. I fed the fry in the 10 gallon their morning vinegar eels and went on my way. Got home just a little while ago and saw that the tank that had been FULL of fry this morning...more than 300+, was almost empty looking. I immediately started a water change and ran the water with the API. No nitrites, no nitrates, but the ammonia was 1.0!! After a few minutes of looking, I found the problem...my snail had died and I hadn't noticed it! I am such a dumbo sometimes! I changed as much of the water as I dared, and did notice a few more fry coming out of hiding...any other suggestions? Can I use prime in a fry tank?