Persistent green water

I am new to the forum but was a subscriber years ago when I first had my pool installed. Currently my issue is green water. I read the post about liquid chlorine. I was wondering about the filter pressure before I started this process. I backwash and rinse the filter but the pressure does not change, but maybe a few psi. I am wondering if possibly the filter medium, zeosand, could be caked and need to be replaced before I start the liquid chlorine treatment.

Just for grins, I found this site and was wondering if anyone has heard of this guy or is this a scam: www DOT greenpooltips DOT com

oh yeah, 16x32 vinyl IG. approx 27000gal.

I made a copy of your post, answered the 'greenpooltips' question, and put that post in the Hall of Shame, here:
http://www.poolforum.com/pf2/showthread.php?14979

There are about a bazillion posts about liquid chlorine or bleach here, so we have no idea what you read. I can't comment on the ZeoSand, except to say the more I know about the alternatives to sand, the less I like them. I can also add that, if your filter is performing more poorly than it has in the past, it's always a good idea to check it.

And . . . the "liquid chlorine treatment" is nothing more or less than adequate chlorination. The only difference between using liquid chlorine, and dichlor or cal hypo . . . is the OTHER stuff added to the pool, besides chlorine.

Finally, until you know your stabilizer level, you do NOT know what level of chlorine is adequate. Furthermore, if your stabilizer level is 60 ppm or more, you can't measure an "adequate level" of chlorine, without a DPD-FAS test kit, which for practical purposes means, without a Taylor K-2006 kit.

Read the Best Guess page in my signature, and then take a look at the Amazon links page for Taylor kits. You can order elsewhere if you like, but you'll need one from somewhere. A K-2005 is NOT an adequate alternative.

Thanks for responding. I was referring to this thread on liquid chlorine for dealing with algae. http://www.poolforum.com/pf2/showthr...You-have-ALGAE!!!

Yep, that one covers things.

With regards to a test kit, I have one of the PoolSolutions PS232 test kits. Is this similar to the K-2006 kit? It does do the FAS/DPD test, and the CYA test, along with the pH, Alk and Cal. just need to replenish the checmicals. Right?

Yes, it's very similar. You can replenish the chems from several places online. I get mine from spspoolspas.com, sometimes from Taylortechnologies.com, and you can get them from Amazon (see link in my sig) and other places. They are all basically Taylor reagents.

Janet