I think we have a winner!!!! Got out to the property for first time in over week. The only change I made was greatly reducing feed times. Was at 35sec 5 times daily and went to 5 seconds twice a day for the last week. I did spray some before I left last week but that hasn't been helpful last few times so I'm attributing the success to lack of feeding nutrients. There's barely any algae present now! I upped feeding just a little to 10 seconds twice a day. Ill. Keep an eye on it but seems good finally!!