It sure would be nice to find something that wouldn't grow too aggressively or be illegal to use. Everything I've found is one or both. I've already resolved myself to 24/7 aeration next fall/winter
/spring to try to knock down my nutrient load.

.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!