When to add chlorine?

[livelox]

Hey all,

Livelox here. I have searched around a bit but I did not find a clear answer to this.
We have a lot of sun in Cyprus and we have a couple rainy days. I had my FC levels two days ago on around 4ppm. When I checked again this morning it was really low at around 0.5ppm and pH up to 8.2ppm.
It rained a bit and we had vaccum to waste for about 15minutes but then replaced the water(water replaced has high pH).
Did this actually lowered the FC by that much ?
I added everything to PoolMath and added dichlor(bleach soon) and dry acid. About 450gr dichlor and 1,5-2kilo dry acid.
What do you guys think ?

EDIT : Following the chart I have 30 CYA therefore I must be around 4-6 ppm FC
Thank you,
Alex

 

[mknauss]

You need to add chlorine EVERY DAY. Maintain the FC in the target range.

 

[livelox]

You need to add chlorine EVERY DAY. Maintain the FC in the target range.

Alright. So a last check every night to see if my levels are on spot. Add what is needed and sleep ?

 

[mknauss]

Pick a time each day that you can add chlorine. Test and add enough to get to target range FC. Soon, it will get repetitive and you can just add the chlorine every day and test every few days.

 

[IceShadow]

Also, dichlor will be adding CYA. Be sure your CYA levels are low enough that you don’t mind adding more.