Newbie needs help. Need a Plan Of Attack To Get This Pool Open

[bbb]

My CYA was 70, but then it dropped to almost 0. When I added in the stabalizer, that brought it back up into the acceptable range. Almost all the algae is gone.

I'm going to take Friday off of work so I can give it my full attention. I'll post the latest when I have it.

Thanks for all the help!

Great to hear. I'm looking forward to see your latest test readings!

[misternicely]

It has been a few days since your last post. I hope all is going better for you.

Just a few words about the bump-type DE filters. I'm not an expert by any means, but I have spent a fair amount of time researching them. I have a smaller pool - only a 9000 gallon, and I use a Hayward EC40 bump filter.

You do not have to replace the DE when your filter pressure builds up. The concept with DE is that it coats the filter fingers/grids/whatever with the DE and that filters out small impurities. With commercial DE filters (like in a massive public pool) when you turn the filter off the DE on the grids/fingers just falls off. Then the DE needs to be washed out and replaced. In these smaller hayward filters (especially the bump type) the filter is constructed in such a way that after you have bumped to knock the DE off, and restart the filter, the DE that is on the bottom of the filter recoats the grids/fingers. It basically just rearranges the DE on the grids. You should notice your pressure go way down after one of these "bumps", and then build up again. Once it rises 7-10 psi, it's time to turn off the pump and "bump" again. You can do this repeatedly. Each time you bump, the pressure on a restart will be slightly higher than the last time. Per the manuals, once you bump and the pressure starts out higher (7-10 psi) than when you FIRST put the original DE in, then it is time to flush (and I mean flush thoroughly) and replace the DE.

I know it is a pain, but it is a good thing that your pressure is rising - at least it is telling you that your filter is taking the stuff out of the pool.

Hope that helps

Mike

[waste]

Mike, nice to hear from a fresh source. You have said, albeit a little better than I did in the post I linked above, what I was trying to convey. You seem to know your sh**, um stuff Just to clarify your point for others who might read this, bumping will drop the pressure some but not take it back to 'baseline' or the clean psi, when it stops dropping the pressure more than 3psi, it's time to do what I linked in my previous post as the de is pretty much 'full'. Welcome to the forum