Hello all,
new to TFP. haven’t done an OCLT yet (looking to get fas dpd test kit)
could anyone confirm (by looks) is this is algae ? I think I’m in denial.
There is a backstory including my SWG being out of whack for couple months and pool turning slightly green, I did the stainless steel brush of walls/floor, then vacuum to waste, shock and some algaecide (this was around 2-3 months ago), it did recover (and was blue!) but there has always been this residue build up which I thought is sand due to a lot of stormy windy conditions and pool is in high leaf area.
Haven't managed to vacuum to waste fully all the residue, due to water level dropping too fast, so not clear if it's just sand spreading back or new algae growth/bloom?
Currently pool looks clear, I did add some clarifier a few weeks back (believe works like floc) so wondering if it's possible it's just sand/inorganic material that have settled on floor (but then walls have it too)
Yellow algae? Possible I initially had both green algae (as the water had turned slightly green before shock treatment) and yellow algae which is persisting due to cl resistance?
Pool shop had one look at photo and said "looks like black algae" and sold me shock/cl powder sodium dichloro.
Other readings are generally ok and around the levels below. pH was high added dry acid few days ago.
pH - 7.2-7.8
TH - 250
Cl - 3
TA - 180
CYA - 30 (maybe)
Salt - 5200ppm
I think my pool is painted/concrete.
The readings are mostly by test strips / dpd kit. CYA on the strip doesnt seem accurate but a month ago pool store gave me reading of 40 (both early and mid Nov)
Thoughts?
If it's def yellow algae I want to treat it accordingly.
new to TFP. haven’t done an OCLT yet (looking to get fas dpd test kit)
could anyone confirm (by looks) is this is algae ? I think I’m in denial.
There is a backstory including my SWG being out of whack for couple months and pool turning slightly green, I did the stainless steel brush of walls/floor, then vacuum to waste, shock and some algaecide (this was around 2-3 months ago), it did recover (and was blue!) but there has always been this residue build up which I thought is sand due to a lot of stormy windy conditions and pool is in high leaf area.
Haven't managed to vacuum to waste fully all the residue, due to water level dropping too fast, so not clear if it's just sand spreading back or new algae growth/bloom?
Currently pool looks clear, I did add some clarifier a few weeks back (believe works like floc) so wondering if it's possible it's just sand/inorganic material that have settled on floor (but then walls have it too)
Yellow algae? Possible I initially had both green algae (as the water had turned slightly green before shock treatment) and yellow algae which is persisting due to cl resistance?
Pool shop had one look at photo and said "looks like black algae" and sold me shock/cl powder sodium dichloro.
Other readings are generally ok and around the levels below. pH was high added dry acid few days ago.
pH - 7.2-7.8
TH - 250
Cl - 3
TA - 180
CYA - 30 (maybe)
Salt - 5200ppm
I think my pool is painted/concrete.
The readings are mostly by test strips / dpd kit. CYA on the strip doesnt seem accurate but a month ago pool store gave me reading of 40 (both early and mid Nov)
Thoughts?
If it's def yellow algae I want to treat it accordingly.
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