Nutrients is certainly a key factor. Your plants look real nice!
It has been an interesting year at my pond and the WH have been a useful tool to back up my water quality tests. It would appear that my pond lacks nutrients, at least at certain times of the year. I look forward to next spring's water testing to further my knowledge of my BOW.
I am a bit on the fence whether to put the WH in next year or not. Maybe just less of them or only in the early summer...IDK. The early season water testing may help make that decision. My land leaser fertilizes the pastures (~ 15 acres in the watershed) in the spring and that may have caused my early obnoxious blooms. For the last month the water has been relatively bloom-less.
One of these days I will have my pond "meistered"! maybe.
