Below test results (Fresh Taylor reagents), I have a couple of issues I would really appreciate some help with....
pH 7.7 (Raises from 7.4 to 7.7 within two days)
CC not tested
TA 120 - 130 (Range is results from multiple tests)
CH 420 - 450 (Range is results from mulitple tests)
Used 25ml tests where possible to provide greater accuracy.
Salt - not tested but believed to be within range (4000 - 5000)
The SWG running 2 x 3hours per day at 50%
Have completed tests in triplicate over a few days and the results are highly repeatable (I.e. consistent). The issues I have are:
1) Calcium flakes forming in the bottom of the pool below the inlet jets.
2) Rapid build up on the SWG cell almost immediately after cleaning.
3) Struggle to keep pH in check, have to add 500ml to 1L HCL every two to three days
Pool is peeblecrete (Concrete) about 15 years old and appears in very good condition (And I would like to try and keep it that way!). The pump / sand filter / SWG is about 8 months old and all working well with good water pressure - sand filter backflushed recently (Twice). Pool water looks good, nice and clear, slight smell of chlorine on the skin when get out but not too bad at all - much less than a public pool. Some irratation on the eyes is noticable.
I have access to about 10,000L of tank water (Rain) which I could use to dilute CH but worried about introducing algae into the pool as tank water very stale - could super chlorinate the water prior to adding to pool?
Any advice gratefully recieved as I am new to pool ownership.