20 gallons of acid???

[CarlD]

On stuff like this, I always defer to Evan. But I still think a pH of 8, an FC of 2 and a CYA of 60 is an open invitation to an algae bloom.
However, Evan's acid test of the tan on the filter is, well the "Acid Test" of whether it's scale or algae.

Carl

[rcci01]

Thanks for all the responses. The PB told me to go get the acid and he would "shut down" the pool today. I asked him to wait till swimming season was over for this which he said would be no problem. I have the CH up to 210 now and the scale seems to look like it is smaller. You guys are saying the same thing the chemical store said thats why I halted the acid bath. The Ph has been a problem but there seems to be no copper or iron on the water tests. Sorry for the confusion on the Wet edge, It is actually the Satin matrix pebble finish. I am going to try the acid on the filters tonight.
Thanks again for all the help.

[rcci01]

Missed a couple of responses. The scale is white splotches and a patch about 2 feet across. Thats the big place a couple of small places as well but not the whole pool The plaster is new but the 8.0 ph was from the water test at the pool store.
Thanks again for all the help.

[rcci01]

Filter update. Filters boiled in the water acid mix. Cleaned better than they ever had. I have had to clean them once a week to keep the pressure down. Lets see how that does. PB says it is the well water we filled the pool with. The well water is not the best. I have been brushing the pool 2 to 3 times a day for the first couple of weeks 1 or 2 times a day since. I will have the water tested again tomorrow and see the results. Working on CH now, ph and fc look good. I will post numbers tomorrow. Thanks again!!!

[waterbear]

It's not the well water, what you are experiencing is very common on new pool start up when the startup method is standard startup and not acid startup. The bicarbonate startup method, which is the other way to start a new plaster pool, is only suitable for marcite and not for aggregate finishes if I am not mistaken so I am going to assume your builder did a standard startup procedure and because of the scaling is going to do a modified acid startup to dissolve the scale.

[rcci01]

Thanks again for all the input. I have the latest numbers just to update the post. I spoke to the plaster installer and they recommended against the 20 gallons of acid just as you all did. The areas of scale are still smaller than before.
FAC 4
TAC 4
CH 200
CYA 99
TA 80
pH 7.6
TDS 1450
Pho 300

Thanks again for the help.