Yea, and like bettas, give them one day a week of no feeding. They don't have a steady supply of food in nature. So it doesn't hurt for them to skip a day now and then. Besides, they find lots of extra nutrients with live plants, especially the salvinia!
My other suggestion is to have a jug you use just for them. To make sure there is no cross contamination. They are sensitive little things. One missed dose of dechlorinator and you have a dead colony. I like to dose my jug, let it sit for 2-3 minutes and then add it in.
I'm wondering how they'll look in a few days. Might ask for some pictures then. Can decide if I'll get some from him or not.