some light green stains

[ddyf]

i've noticed some light green stains lately in a couple of places, including seat in deep end, bottom portion of alum ladder and a bit on the shallow end steps. left a trichlor tablet on the seat for a min or so - no effect. however, these stains wipe away w/a simple swipe of a finger. i'm diligent about water chemistry (thanks to all of you), but i sometimes find it difficult to keep up w/all the leaves which fall from trees near the pool. i could also be more diligent about brushing.

FC: 3
CC: 0
PH: 7.8 (already added some MA)
TA: 70-80
CYA: 30-35
CH: 260

water is crystal clear, no problems w/OCLT.

are these light stains anything to worry about?

 

[TripleB4me]

Your FC is on the low side go up to at least 5 or 6 ppm.

 

[Richard320]

If they just wipe off, they're not stains... It's either algae or something like pollen. Run your chlorine at the high end and see if they don't go away. If they do, it was algae.

 

[ddyf]

pollen has been unusually high this year, so that could certainly be the culprit. raised chlorine, then brushed. hopefully light green areas will not return. appreciate the replies, thank you.