Hi, I took mine apart, no problem, the same as detaching from the tank. I have sand in the pool too, but my valve seems ruined. I got it used and tried 3 different gaskets and it leaks in 5 places. I'll give you my old valve if you pay shipping... charleshenryjunior@hotmail.com (but just jr, not junior)
Jul 07, 2011 Rating
Comment By Robert by: Anonymous
Thanks for the readings Liz
I'm hesitant to tell you to shock with Dichlor chlorine. This is a stabilized form of chlorine that will add CYA into the pool.
You'll need to get the CYA level up, then keep the chlorine level above 12ppm to kill the algae.
If you have an elevated CYA level it will only make matters worse.
On the other hand, I don't want you to keep throwing chlorine in the pool without having any CYA in there.
The best thing to do right now is to shock the pool with regular chlorine at night, then retest in the morning and see what the chlorine level is.
Like I said, the chlorine needs to stay above 12ppm and you need to back wash once per day until the algae is killed.
You'll know this because the water will turn to a white/gray color.
Keep the chlorine level elevated all through this process.
You can also use a PolyqQat 60 algaecide to give you a little more added insurance against another alge bloom while this is going on.
You'll need to manually dose your pool to keep the level above 12ppm. You might go through alot of chlorine but it's the only way to get rid of the algae.
Here are links to the chlorine pages. They have charts you need for your size pool.
Go just a little over the recommended dose for chlorine. It's better to go a little over than not hit the mark. 12 - 15ppm chlorine is fine for a good shock.