The pool size is 12' x 26' and only 9000 gallons. The problem was the alkalinity level was being ignored - it was very low, non existent. PH did not register at all on the testing kit we have. The water was tasting bad.

We use regular chlorine - no heater - Hayward pump.

When we increased the alkalinity orange residue appeared on the surfaces of the pool.

Anyway, I just called my pool guy. He said that it is metal that was purged from the water after raising the alk.

Thanks.

*Yes I know I made a mistake by posting twice (I did apologize in the post I make in this section). I swear I won't do it again. Have a wonderful day.