Hey y'all, glad to join the party! We've just bought our first house with a pool and are trying to get our bearings.
FC: 3ppm
CC: 0.5ppm
pH: 7.7
TA: 135ppm
CH: 300ppm
CYA: 200ppm after proper testing ... 210ppm? See pic, below
Water looks crystal clear to slightly cloudy, depending on the day. No color to it unless I've brushed off some mustard.
I've just backflushed and hand-washed the DE filter, and added a little chlorine over the past week (less than expected, presumably because of the CYA?). It's only taken a single dose of [email protected]% to get it from 1-2ppm to 3ppm and it's stayed there the last few days.
We've been getting some mustard algae despite normal FC (because of the CYA?) and there's some black mold, a handful of spots and a patch ~2sqft, which have been there for some time.
I'm guessing we want:
- dilute down to nominal CYA levels
- rebalance (to what pH?)
- treat mustard mold with Yellow Treat + shock + brush
- treat black mold with black algaecide + shock + brush
What's the best order to approach these in? Can the mustard/black mold treatments be used simultaneously, or will we require two separate treat/shock cycles?
Is it worth taking a water sample my local pool store for a sanity check?
FC: 3ppm
CC: 0.5ppm
pH: 7.7
TA: 135ppm
CH: 300ppm
CYA: 200ppm after proper testing ... 210ppm? See pic, below
Water looks crystal clear to slightly cloudy, depending on the day. No color to it unless I've brushed off some mustard.
I've just backflushed and hand-washed the DE filter, and added a little chlorine over the past week (less than expected, presumably because of the CYA?). It's only taken a single dose of [email protected]% to get it from 1-2ppm to 3ppm and it's stayed there the last few days.
We've been getting some mustard algae despite normal FC (because of the CYA?) and there's some black mold, a handful of spots and a patch ~2sqft, which have been there for some time.
I'm guessing we want:
- dilute down to nominal CYA levels
- rebalance (to what pH?)
- treat mustard mold with Yellow Treat + shock + brush
- treat black mold with black algaecide + shock + brush
What's the best order to approach these in? Can the mustard/black mold treatments be used simultaneously, or will we require two separate treat/shock cycles?
Is it worth taking a water sample my local pool store for a sanity check?
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