start up 1 wk's my numbers....


LifeTime Supporter
Sep 10, 2007
Gloucester County, NJ
pH = 7.4
alkalinity = 70
cya = 0
total hardness = 70
total chlorine = 0
free chlorine = 0

28,000 gallon gunite/plaster pool w/ 60sq ft DE filter

pool store recommended adding

4 lbs alkalinity increaser
3 lbs of shock
20 lbs of calcium hardness increaser

I added 6 7oz chlorine pucks to the chlorinator on Sat night and set it all the way up...still not registering any chlorine levels. Are the above recommendations appropriate for a brand new plaster pool? How critical is the calcium harness increaser right now? our harness reading was 0 on Sunday, now it's 70.


LifeTime Supporter
Platinum Supporter
TFP Expert
May 7, 2007
Silver Spring, MD
A new plaster pool will normally bring the alkalinity and calcium levels up all by it's self as the plaster cures. If you add any now it will end up being too high in a few weeks.

CYA can test as zero when it is as high as 15 (or perhaps 20). I would just keep on using the trichlor pucks for a while till you have a good CYA level.


LifeTime Supporter
May 16, 2007
New Jersey
smuggs...welcome to TFP. Glad you came over to check this out from Gardenweb....I think you will like it. JasonLion is one of the very very very smart people on this site....follow his advice and you will be in good hands.