QT questions. I am getting two approx 3 in Snakeskins and 10 neon tetras. They have been in a 90 gal tank with a few other fish including three Angelfish and some coris. The guy is a soldier and is going on deployment, so he is breaking down his tank. He said all fish were healthy and eating well--I haven't seen them in person myself yet, but he sounds like he does pretty well with his fish--he has a saltwater and a freshwater tank. Anyway, I know I will Qt--I have already made the newbie mistake of falling in love with two discus at LFS and adding them to my tank after only 3 days QT. My four new discus got sick along with the two new ones--two new ones eventually died. Mine got better thankfully--so lesson learned! Patience--QT must be several weeks not days! About the QT I bought what I thought was a 10 gal tank off CL and cleaned it up for a QT tank. I kept thinking it looked a bit small for a 10 gal--come to fine out it's only 5.5 gal. It will only be housing the two small discus and 10 neons--with daily water changes, will it be ok? Also it has a small HOB filter--nothing fancy--has the typical blue charcoal pad and a bio pad. Should I replace this with a sponge filter or add in a sponge filter and keep the HOB? One last question--I have a 44 gal corner tank which houses at the moment--4 approximately 2 1/2-3 in discus, 3 Emerald Cories, 2 Pepper Coris and one LF BN Pleco--I will be adding the 10 neons and 2 more small discus eventually. I know when all are full grown it won't be big enough--how long before I should upgrade to a larger tank?
Thanks ahead of time for the help and input