I have a 10 gallon qt tank that I have been using for fish recently. All of the fish I have put in that tank within the last 3 to 4 months have died within days of being introduced. I don't know if something is wrong with the tank or if it is just bad luck but either way, I think I don't really want to take another chance putting a new fish in there again. I want to get a guppy to finish off the stock list of my 15 gallon tank and would like to qt it before putting it in with the other fish and shrimp. Would I be able to keep it in a 2.5 gallon minI bow shrimp tank for 3-4 weeks until I am sure it has no diseases? I don't want to cram it in there but if it is better than the 10 gallon I think I would like to try it. Is this too small for a temporary home or would the guppy be ok in there? There will be no shrimp when I get the fish and it could be heavily planted if necessary or empty if necessary. I don't know which would be better. Any help would be great. Thanks!