I'm now into my second week of SLAMming my pool and while the water looks good, I've got brown stains where the algae used to be (I can't believe that it's still algae). I reached the goal for the SLAM two days ago (<1 overnight loss, 0CC and clear water) but then I've spent the better part of past 48 hours at the mustard algae level of >30 but I'm not seeing any results and my CC is still at 0. My current numbers:
FC: 24.5 (I've let this back off from the >30 today)
I know that TA and CH are high but could that be stopping the FC from getting at the last bit of algae? The fact that I've maintained 0 CC for the past 48 hours leads me to believe that nothing is going on (apart from me adding bleach to the pool).
The stains are streaks on the sides and on the bottom in the shallow end. The pool overall looks great but these stains are just not going anywhere and driving me crazy. Four weeks ago they weren't even there so it's not like it's a lingering problem- they just showed up, I listened to a pool guy and dumped a bunch of phosphate killer in there and then shocked but they didn't budge. That led me to the SLAM technique to finally get it sorted but no joy so far.
Any help/suggestions are more than welcome!