Slick Walls

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Okay, good sign!

Brush, brush, brush, (everywhere), and keep your FC on the higher side. You might have caught it in time.... Let's hope!

If I can't get in the pool, I always at least reach in and feel my sides. When I do get in, I always feel the floor, corners, and less well-circulated areas carefully. I have not had a "slimy feel" in eons, but I always check.

Keep a careful eye on CC and FC loss just in case!
 
FC 4.5
pH 7.5
cya 40
TA 90

i use bleach. TF100 test kit.

algae on the walls can develop a biofilm that protects it from the chlorine, that's why brushing is needed. I brush my pool only once a week and I don't get any forming. how often are you brushing? I would brush it pretty hard and then do a OCLT to confirm. you may need a SLAM to knock it out, but would only probably take a day or two since you don't have much
 
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