Hello Everyone! Here's my story:

Foam when you agitate surface (goes away after about 30 seconds).
CYA was very high 100+
AK was high as well.

Did a 50% dump and refill and my CYA is down to 60-70 and AK is down as well.
However, the foam is still there and is driving me crazy.

Any thoughts and help would be greatly appreciated.

Gunite. 14,800. NSW. Hayward Cartridge Filter. Hayward Superpump 1hp.