Specs: 20 gallon tetra fish tank. Whisper filter. 100 watt heater. Flourescent lights.
I don't see what i'm doing wrong but my second fish is about to die. I understand that the first month of having a tank running it's going through it's new tank syndrom but I feel like i'm doing everything right.
Few weeks ago: 2 Tiger barbs (Plan was to add 2 more the next week, then 2 more the next week to have a school). Every other day i'm doing a 25% water change (Just started doing that this week...I was doing the water change once a week the first 2 weeks.)
After the first week I felt that the ammonia was not low enough yet to add the next 2 fish so I held off. After a few days after that one of my tiger barbs started getting very pale, I wasn't sure what was wrong he was still eating twice a day but he was mostly staying behind the heater not moving everyday. He died after a few days, after he died I noticed my other tiger barb has ick. (This is where I start doing water changes every other day) I add in 2 ick removing tablets after the water change and repeat every 48 hours. My fish still has perfect color never got pale and I did overfeed him once on accident. Looks like his ick isn't bad anymore but still has some, but now he just sits behind the heater ever since I overfed him a couple days ago still has perfect color though.
He still eats every time I put food in right away, I don't know what's wrong. There looks like there might be some algea on the heater i'm getting a algea cleaner soon. The ammonia is almost all the way gone. I'm waiting for his ick to go away to add more fish but I don't know why he's so sick if he's still eating.
My water evaporates noticabley everyday. Not sure what's going on here, lights are to strong? They came with the tank.
Should I add in one of those little submarine things that are on the bottom of the tank and it gives the tank more air? Not sure when these are needed.
Anything I need to really add in to my fish tank maintanence or fix? Thanks.