1st test results of spring - few questions...

[aylad]

To raise your CYA quickly enough to get "some" in the pool, go ahead and use straight CYA--I would target about 15-20 ppm when figuring how much to add. Then you can use the trichlor from there until it gets to where you want it. As far as pH goes, the trichlor WILL bring it down, and 7.8 isn't too bad to begin with so I wouldn't worry about that.

Janet

[CarlD]

Also remember that it take up to a WEEK for the CYA to completely dissolve and dissipate throughout the water.

While I generally avoid tabs in use or recommendation, when your pH is high and you have no CYA, they are a great way to add all 3 and convenient as well--plus, and this is important, they help keep a CONSTANT level of chlorine in the water when you need it most, as they erode.

But when your pH is good, or low, and your CYA is on target or a tad high, you have to abandon them for bleach / LC.