Sick Molly at Bottom of Tank
I have seen a few posts pertaining to this, but I wanted to ask more specific questions. I have had my tank set up for about 2 months. I started with an overstocking issue and an in-fish tank cycle. Originally, I had six mollies and one Chinese algae eater in a 10-gallon tank. I now know that this was not large enough. Two of my Mollies end up dying from ammonia poisioning over a month ago and I now have four Mollies, and the one algae eater. I have a hang on back filter, a sponge filter, a heater, two buildings, and three fake plants. When the tank was still cycling, I did water changes every other day. I now test the water every other day and do changes as needed, usually every 4/5 days at 20-30%. Water levels are currently at ammonia: 0, nitrites/nitrates: 0, ph: 7.6. They have been good for the past two weeks. However, I just had one of my Mollies exhibit sickly behavior just like the ones with the ammonia poisoning. He is sitting on the bottom, fins clamped. However, sometimes he will have spurts of energy and swim around. it's been like this for about 2 days and I did a water change yesterday, even though all of the levels were perfect. I try to vaccum monthly. He has been eating normally until today when he just sits at the bottom, minus the little bit of swimming here and there. I can tell he is end of life, but does anyone have any insight to what this could be with good water parameters? I assume it may just be leftover ammonia poisoning from the cycling, but it's just strange that he exhibited symptoms so late out of nowhere... I also want to avoid this with the rest of the fish in the tank. I ended up buying prazipro just in case something popped up while there were all the spikes with the tank cycling earlier. Anyway, let me know! I added a picture of our limp friend, Stinson. Thanks much.