OK.
Some cousins moved to our neck of the woods. We agreed to help them with their pool, which was filled with algae. Initially we added pure (unbuffered/unconditioned) shock. They got some other shock which obviously had CYA in it.
Here's where things are:
CYA 100
FC 7
TC 18
TA off the scale
pH about 8.
Pool is approx. 15,000 gal.
In ground/Gunnite
Outdoor direct sunlight
Cartridge Filter
Pump FR etc. unknown.
Not really worried about the pool maintainance/issues per se, realize we will have to drain about 10 - 20% H20 to realize a lower CYA, also know that the FC maybe should be a little higher, but I'm puzzled.
If the CYA "binds" the Cl, then how can CYA test +? Is the CYA test testing for a part of the CYA rather than CYA per se? (Doesn't make sense to me, as I vaguely remember from HS Chemistry that acid + alkali = salt + H20 ----so why isn't the CYA being used up?). Unless the CYA is acting as a catalyst, but then, why wouldn't the pool test more acidic......???
Hoping some chem nerd out there can give me a formula or two and set me straight.....
Thanks!
Daisy
Some cousins moved to our neck of the woods. We agreed to help them with their pool, which was filled with algae. Initially we added pure (unbuffered/unconditioned) shock. They got some other shock which obviously had CYA in it.
Here's where things are:
CYA 100
FC 7
TC 18
TA off the scale
pH about 8.
Pool is approx. 15,000 gal.
In ground/Gunnite
Outdoor direct sunlight
Cartridge Filter
Pump FR etc. unknown.
Not really worried about the pool maintainance/issues per se, realize we will have to drain about 10 - 20% H20 to realize a lower CYA, also know that the FC maybe should be a little higher, but I'm puzzled.
If the CYA "binds" the Cl, then how can CYA test +? Is the CYA test testing for a part of the CYA rather than CYA per se? (Doesn't make sense to me, as I vaguely remember from HS Chemistry that acid + alkali = salt + H20 ----so why isn't the CYA being used up?). Unless the CYA is acting as a catalyst, but then, why wouldn't the pool test more acidic......???
Hoping some chem nerd out there can give me a formula or two and set me straight.....
Thanks!
Daisy