I have brown powdery substance that is getting into the indentions on the floor of my pool. This brown stuff is in the areas of the return jets giving me the opinion that this stuff is going thru my system filter and all and being redistributed into my pool. We have had allot of pollen this year, however wouldn't the filter catch this? At lease the backwash water was yellow indicated that pollen was filtered out. I can vacuum this stuff up, backwash the filter, and it re-appears a few days later in the areas where the return jets are aimed. I have been trying to keep my pool at shock level for the last five or six days because of an algae problem but that is a separate topic. Seems like I heard somewhere that Mustard algea was smaller than standard algae and that to truly get it out of your pool you needed to vacuum to waste?
FC-14 added 364oz. of 6% bleach this morning after test. Should raise FC to 18
TA-120 I was trying to hit 100 so I could put borax in but ended up overshooting it.