Friday, June 3rd, 6:15 a.m. (Day 9)
Our pool (IG, 18400 gal. vinyl liner, 300lb sand filter) has a very bluish color and looks crystal clear this a.m. – thanks to finally having a chlorine based sanitizer! With the exception of some visible sand in the bottom from changing the sand, and then balancing the water, we will soon be ready to enjoy the pool for the rest of the summer! Test results from this a.m. are as follows;
WT = 81 deg.
FC = 4 ppm
CC = 0.4 ppm
pH = 7.2
TA = 60 ppm
CH = 0-30 ppm (1st test sample turned light purple, 2nd test sample (with Hardness Reagent added first) – water turned immediately Blue once the 5 drops of R0011L was added?)
CYA <= 30 ppm
My best guess is to add / do the following (after I vacuum the pool):
pH – on the low side but OK for now
FC & CC – both OK, keep watch on FC during the day
TA – add another 2 lbs of baking soda (A&H) –later this a.m.
CYA – add 2lb via sock in skimmer basket
CH - ?? Could use some help here – the test results are a concern!
Algaecide – When to add?
However, other then increasing the TA & CYA, any actions with regard to the CH (which is likely have some iron or copper present), as well as ‘when’ to add the Algaecide, is where I could some more information / help.
In advance, many “Thank You” for your time & inputs,
Gene
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