I'm sorry your new babies died!*
I was looking at your tanks, and wanted to suggest to you to look around and find a decent fish store that has clean tanks, healthy fish, and decent supplies.* You might be able to work out a deal to get credit for your babies in your 10 gal. tank when they get big enough.* This would help pay a little bit for your hobby, and it would also free up your 10 gallon to be used for a hospital/quarantine tank instead of the smaller tank you are using.* Plus if you found a good fish store, they'd most probably have much more interesting fish to put in that empty 20 gallon I see you have empty (hint hint).* *
P.S. You might want to think about putting the cory cats in that 20 gallon also, and go to
www.loaches.com when you have some drool time. Yo yo loaches come to mind for your 55 gal. tank and your snail problem. That is assuming your snails are the pest variety and not the apple/mystery snail variety.