I don't think it was the crayfish that kicked the diffuser stand over, so you're in the clear for now. lol
Coming out of winter the viz in mine was 4'-5'. When the monsoon came it turned to chocolate milk. It was starting to clear up, then I turned on the air. It's been a wreck ever since.
I've got room to create a small settling basin in the draw at the top of the pond. If it ever dries up enough to get in there. I don't think we've had even one ten day stretch of dry weather since late March.
