Algae

[semperfi]

I have owned a pool for 23 years, have been maintaining with chlorine tabs, in-line chlorinator. most years have been pretty good. other years have algae issues. the pool company who put the pool in told us to use the tabs, 1 gallon of shock a week, and a half gallon of liquid algaecide a week. stumbled onto the site, bought a TF-100 kit and have been testing my water most nights. today i went out and there was algae in the corner. we have a solar cover that is on the pool when not swimming.

do most people find that they know how much chlorine to put in nightly? what should i have for a free chlorine level?

here are my numbers:

FC 2.5
CC < .5
TA 110
CYA 30
pH 7.5
Calcium Hardness 300
Temp 88F

any suggestions? the paper that came with the kit said to use the K 1000 every night, have been using the chlorine drop test every night. I have to work 12 hours a day next few days slam would be difficult. Anyone here use algaecide as maintenance?

 

[pabeader]

Here the is reference chart for FC/CYA ratio: Pool School - Chlorine / CYA Chart

For your CYA level you should be up between 4-6ppm FC. 2 is the absolute minimum and puts you at risk for algae. So you need to increase your daily FC to get up around 6. If you find that you are still getting algae, you will need to SLAM until that clears up.