I've had an issue with foam in my pool/spa for over two weeks now. It started right around the time I treated my pool for black algae. I accidentally put twice as much in as I was supposed to. I added clarifier afterwards as it suggested. The issue is that I run my pool water into my spa for a waterfall effect plus to keep it circulating. The spa when sitting it totally clear to the bottom. Once is start up the pump it gets cloudy and then foam is produced by the waterfall effect when it hits the pool. Turn on the spa and blower and be prepared for endless bubbles and foam. If I just run into the pool and bypass the spa I obviously get no foam because there is no splashing. It's getting better since this started two weeks ago but honestly I'm sick and tired of dealing with and seeing it. The chem tests all come back as normal, at least the same as before this started. Any suggestions?