New member here. I read all the Pool school and I think it gave me enough base of knowledge to be dangerous. I've owed and maintained my own in-ground pool for several years and fortunately, when i opened mine this past weekend it was crystal clear.
However, the reason I am posting here is not for my pool. I am helping my father with his pool. We opened it up 2 days ago and it was green. I could actually see the bottom of the deep end (16x32 8 ft, 19,000 gallons) and it was covered with green algae. After a brushing, the pool turned to pea soup and has been like that ever since.
Had the water tested at the local pool store last night:
CYA 100 (he's used pucks for 20 years).
They suggested 5 gallons of liquid chlorine and brushing. Based on the calculator that should be more than enough to get the FC up to 25 (needed for CYA=100). The calculator suggested about 4 gallons of 12%.
Here's what happened....
1) around 11:00 this morning he put 2 gallons of liquid Chlorine (12%) and 3 packs (1 lb each) of di-chlor and then brushed (I know, that made the CYA problem worse).
2) I get out of work at 5:00pm and picked up 10 gallons of liquid chlorine.
So, I'm sure it is shocked enough (probably too much). By the end of the day (around 8:00pm) the water is still as green as when we started. The filter is a sand filter running 24/7.
One problem is that I don't have a test kit (ordered the TF-100 today) thus I'll have no way of telling what the FC is or how it changes until my kit arrives probably this weekend. I do have test strips but both the TC and FC only go to 10 on the strip so the only thing I know is that the FC was at least 10 when I left his house tonight. So I was planning to keep shocking at 5 gallons/day and brushing until the water turns grey/milky. Does that sound reasonable? I know it would be much easier to to it properly, but he really wanted to get started ASAP so I'm doing this blindly until the kit arrives.
Actually, after we use all the liquid chlorine tomorrow, I suggested that we move to clorox based on what I've read here. I think that means I'll need double since clorox is 6%.
So, again my plan is to add 4-5 gallons (or equivalent clorox) each day and brush until my test kit arrives or until the water turns gray. Hopefully by then I'll have the test kit.
Anything i should be doing differently?