What is your added aeration? Bubblestones do not count. The only useful aeration sources are your hang on back filter, and power heads. Both create surface agitation. Bubble stones just sprinkle bubbles into the water
Sounds like your using a lot of chemicals, which is really unecessary sometimes. In your case, I would only be adding dechlorinator to the water for your water changes (add dechlor before putting water in tank). The other chemicals are supposed to provide ammonia for the tank, or "Cycle" it, but IMO it's all BS. If your tank had 0 fish, then you would need some kind of artificial bacteria to get the tank going. Since you are doing a fish-in cycle, the fish provide all you need thus the chemicals are just complicating your situation.
Nice selection of fish btw, sounds like your doing a lot of right things but i seriously disagree with bala sharks in a 45G. They need something more like 125G, so expect to be giving those away when they grow to be a foot, or rehoming them. ID Sharks are also not from the home aquaria, they just get way too big. I don't know if you know about them or if you just saw it in the store and liked them, but they should not even be bought in stores. Your ID shark can grow 2-4 feet, and can literally bust your tank walls. Your pleco will also need a 75G+ tank at adult size.
Here's a link for your ID shark:
Iridescent Shark Catfish, Pangasius Catfish
gl hope this helps