Sounds like you already experienced what most people do when they first get started! I bet this time around they will have a way better chance at making it.
I might add, be careful adding any more damsels. If they do live through the cycling of your tank, they are very aggressive and even harder to get out of your tank. I know I still have 3 in my 125 gal 1 1/2 years later and I can not get them out.