Just arrived at our house - which some of you may already know is rented out most of the time - to find a clear pool but with FC at 15-16ppm
I left the pool open in the sun all day today - 5 kids been in and out most of the day - temperature of pool is 28C, temp in the shade is about 35C, so bright sunlight. Tested using DPD kit this morning and the FC was at 15ppm. Tested the pool this evening and it was still at 15ppm. I thought it would have dropped but it seems not.
CC - 0
CYA level is 60
TA is 130
CH is 140
PH is about 7.6-7.8 but reckon it's on the high side due to chlorine - although marginal.
I have installed a new Pool Pilot digital, which I am still trying to fine tune to produce the right amount of chlorine, (I've also installed a new Hayward Max Flo VS pump, so lots to play with!) The pool cover was on for 24hrs including during the day preceding my 15ppm result, so would this have raised the FC to this level so quickly? Also, how long can I expect the chlorine levels to remain above 3ppm (reckon this is about right default level? or should it be about 5ppm) with the cover off and the sun shining?