Feed them from 2-3 times a day in small - moderate quantities. you can see the food in their bellies. That's also why i used liquifry - cause its white and easy as to see, especially when they eat it.
I didn't do any water changes, but that was because i had good filtration and it was in a planted tank, and plants tend to sort out water quality.
I would do water changes when you see there is extra food at the bottom and that is going off. I just let the glosso cover it and use it as nutrient.
sorry, didn't see that. but yeah its pretty normal.