Hello everyone. I'm new here. But I have a question. I have had 2 corys for about 3-4 months now and one is starting to act very ill. Normally it is chasing the lacey and sucker around and floating with the bubbles. But today it is laying on the bottom at funny angles. All the levels are good, can't give numbers right now-at work. They eat great: flakes in morning and bloodworms or krill at night along with the occasional algae tab. They are so cool I would hate to lose one. Although they are only .99c at pet store. Help please.