No Chlorine at all in pool...

[markcobra]

Well I got 2 gallon of liquid chlorine left 10% should I just use 1 gallon of that. Don't have bleach. I also have 3lbs of cal hypchl left too.

[Watermom]

Sure. You can use the 10% or you can use some cal-hypo since you have a concrete pool and your calcium hardness level is only 160. (200-400 is the suggested range.) Either way will work.

[markcobra]

Had to backwash, psi was ready to hit 30 after I put the pool perfect w/phos free in. Now I'm at 11psi. I usually hover around 11 - 18 psi. Gonna throw some cal-hypo in, in little awhile. It just got real dark thunderstorm warning! Should I wait?

What should I do about the 400 Phosphate reading?

[PoolDoc]

People get algae during rain because they stop taking care of their pools -- NOT because of the rain. Add the chlorine!

Don't worry about the phosphate.