My recent shock treatment for recurrence of Algae (May 9) after my first inadequate shock experience was a fantastic success resulting in the cleanest clearest pool I have ever seen.
Did the OCLT as outlined and all was good.
Since then I got the CYA up to a bit over 30
Present tests are:
A few days ago I took out the trichlor Puck cause the FC was getting high and forgot to put it back in for a day. Big rain came and FC got down to 2. Greenish Yellow dust started appearing on floor. I brushed the whole thing and backwashed the filter…then checked the CC again to see if that changed it (stirring up the dust) but it still read 0.
My Question is: Is there a way to test and determine if this is algae or dirt/dust from roof screen (It is a screened Pool). Like an OCLT test to indicate that there is Algae eating up the Chlorine? I realize that it will become obvious in a day or two if it is back again but if I can determine if it is algae I can start the shock now and get done sooner. It was darker and thicker on the deep end which is the opposite of what I read about Mustard Algae formation symptoms.
TIA Pool Gurus!