as for chems, I only use seachem safe, same thing as prime but in powder form and allot more economical. I change between 450g to 500g a week between the 3 tanks.
There in a 40B right now until i move them to my 75g. My water from my tap ph is high (8.4)and water is hard. Everything else is pretty good. I have 2 sponge filters and a aqua clear 70 on my tank.I keep flowerhorns they're messy eaters but my water quality has never been bad. Might want to consider over filtering your tank. I do water changes by taking out the water and adding prime before I fill up that's it. Doesn't get too cloudy but the next morning it's crystal clear again.
What's your tank size and filter on it? I feed 4 red Texas two Flowerhorn loaches and vieja maybe 50-60 pellets everyday. Never an issue with water chemistry or cloudiness.
I'm on a sump and have polyfil and bio balls and pot scrubbers.
Whats your ph?I do use salt every water change not much but thought I'd share.
No Idea I have not done a water test in 7-8 years lolWhats your ph?