First off, let me say I'm a noob when it comes to fish. All I know, I know from a friend... and it's his wedding I got my beta at, so I don't want it to die. So here's the issue...
I have the little guy in a little 3 gallon tank with a filter attached to the airpump. (See what I mean? I don't even know what it's called!) Anyways, I was told to clean out about 1/3 of the water with a gravel cleaner once a week or so, and I've been trying to, but it's probably closer to every two weeks. Little Yac didn't seem to mind though, so I've been fairly faithful about it. Anyway, lately his fins have been a little off... like they're being chewed up at the ends. Mostly his tail, and not the top and bottom fins, but a little bit of those too. And he had a spot on one of his gills. I'd also been noticing that I couldn't suck up all the floaties in the water anymore, so today I decided that his water might be a bit toxic, so I put him in his old bowl, and cleaned the whole tank out. (Just rinsing, I know they don't like soap.)
Well now he's just laying on his side at the bottom of the tank. He moves once in a while, but not often, and he just goes to a different spot to lay down.
I put in the fancy drops in his water, and I put changed the filter as well, so he should be clean and contaminate free. Why is he just laying there? What can I do to perk him up?
Help! I don't want Yac to die!