New Pool Owner

[bobcat]

Got home, tested...ph still low/chlorine still high. Backwashed/rinsed, added box of borax, waited hour and FINALLY...ph came up to 7.2!!! Added one more box of borax, will post in an hour or so...I'm excited!!!
Janet, not sure if all the borax finally caught up, or disloving in a 5 gal bucket did the trick! Kinda strange that as soon as I did the bucket the ph came up.
Edit: 2 hours later; ph still holding at 7.2
Chlorine still high off the chart
TA- 100
CYA- didn't make the first mark (Walmart 6 way tester) about half way to first mark of 100
15x30x4'= 12,000 gal?
Dynamo 1.5 motor
Aquatools Sand filter AT3120
The chlorine is still above the chart, but it has turned orange instead of red. If the ph gets right tonight, which I think it will, can the kids go swimming tomorrow or will the chlorine level still be too high?

Thanks,, Robert