Thanks all. Yes they are the photosynthetic ones. I have been siphoning them out but they just keep on coming. I target feed my corals and crabs once or twice a week.
For flow I have a Korilia 1 and 2 in my 28 gallon long (I think I said it was a 29 before oops).
The wrasses intrigue me but I worry about their invert eating habits. Velvet nudi is cool but once the flatworms are gone then they have no food source.
I will research a bunch of your suggestions now as there were quite a few.
Thank you again all.