pool got cloudy after adding pH UP

[PoolDoc]

Filtration . . . and time.

You could see if it will settle:
1. Raise the chlorine level HIGH.
2. Turn your pump off for 24+ hours.
3. After it settles (if it settles), adjust your returns upward so they don't disturb the floor.
4. Carefully vacuum the calcium dust to "WASTE".

(Not an option, if you don't have a multiport with a 'waste' position.)

[Limoges_swimmer]

Filtration . . . and time.

You could see if it will settle:
1. Raise the chlorine level HIGH.
2. Turn your pump off for 24+ hours.
3. After it settles (if it settles), adjust your returns upward so they don't disturb the floor.
4. Carefully vacuum the calcium dust to "WASTE".

(Not an option, if you don't have a multiport with a 'waste' position.)

I did a backwash today, and the beackwash looked milky: that means the filter is catching some of the stuff. I'll try some more filtration for now, and if it doesn't improve in 24 hours, I'll do the chlorination/settling/vacuum to waste (yes, I can do that) thing.

You guys are really helpful: thanks a lot!

[PoolDoc]

You might read http://pool9.net/de-test/

The page describes adding DE to your sand filter, to verify that it is working properly. BUT, DE will also cause a sand filter to capture smaller particles than it otherwise would do, so using DE might reduce the time it takes to clear the water. However, it will result in more frequent backwashing, and you'll need to replace the DE each time. For most residential sand filters, 1 - 2 cups of DE is enough.

[Limoges_swimmer]

Stupid question: what's DE?

[Watermom]

DE (diatomaceous earth)is a white powder that is the filter media for a DE filter. It is actually the ground up fossilized remains of tiny aquatic organisms called diatoms. You can buy it at a pool store. Just buy a very small bag and don't let them talk you into buying a bunch of other stuff while you are there! They'll probably try!

[PoolDoc]

not a stupid question; there's a lot to learn about pools:

http://www.homedepot.com/p/Pool-Time...2PTM/100071664