algae and high ph

[dalejanus]

The pool is somewhat less green, but I'm having vacuum trouble. It doesn't always want to seal at the skimmer and since I can't see the bottom (today I can see if faintly) I was not able to tell if I was vacuuming or just brushing stuff around. Then the pin that attaches the head to the pole broke. Of course this is at 7:30pm, so I run to the pool store before they close. Pool store is closed on Wednesdays. Sigh.

So I shocked some more, now up to 25 ppm (a little more than I planned). We'll see how much it drops overnight.


When should I add Muratic acid to bring PH down? After algae is gone or do it now?

[aylad]

When should I add Muratic acid to bring PH down? After algae is gone or do it now?

Your chlorine is going to be more effective at the lower pH ranges, so bringing it down now would be fine...as long as you know your levels are accurate. High chlorine (I'd say above 10) will skew your pH test results upward, so just be careful not to drop it below 7.0. I'd shoot for 7.4 while your chlorine is high just to give you a little wiggle room.

janet

[dalejanus]

good advice, aim for the middle.

Bleach calculator says 9oz for a .2 decrease, I'll try 27 oz which should bring me from 8.2 to to 7.6 or so.

As everyone on this forum says, small steps are much better than large ones.

The pool is clearing, now its blue rather than green.

[aylad]

The pool is clearing, now its blue rather than green.

That's good news...just keep the chlorine and patience level up, and you'll be crystal clear before long!

Janet