Appreciate all the responses. So it's not just me that has problems with it dissolving ... that's good to know.
I just got concerned when some settled on the body of my fish and took a little while to go away. That was the first time that happened probably because they thought I was dumping in some food and swam right into it.
I'll keep trying different things from all the very good suggestions provided. Especially since I'm going to try dosing it 2x/week ... my GH seems to be dropping now during the week. It used to stay stable.