Stuff on Bottom of Clear Pool... Brown Algae??

[Watermom]

Have you had your water tested for metals? That might be a first step. Post back once you have it tested and somebody here can try and help you.

Welcome to the Pool Forum!

[Tabisme]

Thanks for the reply Watermom. I will get it tested tomorrow and post the results.

Thanks again!

[Tabisme]

Update 7/23/11

First off I want to say that if anyone is still doubting BBB method..you should not! As I mentioned in original post. I have had my AG pool for 4 years prior to this year. Always did the pool store recommendation and had ok water at best, put alot of differnt stuff (per their recommendations) over the years. Converted over to the BBB method about 4 weeks ago and could not be happier. Had to take a sample to the pool store to get metals checked and was told I had perfect water and that I was showing it off. All I could do was chuck inside. I havent had this clear of water since the day I had the pool filled. Thanks Again to everyone here for promoting the BBB method and keeping us newbies on the right path. But back the the issue at hand.

Water checked out with no metals (zero copper and zero iron), everything else is in line with my last round of full numbers (see original post). I checked FC and CC levels this mornig as follows: FC = 4.2 and CC 0.2, so it appears the stuff may be the start of algae.. more than 1.0 ppm drop overnight?? I had a verry small amount of brown stuff on the bottom again this morning. I am going to start shocking, and I presume I need to take FC up to 30 ppm to be safe???

Also the pool store told me phosphates are at 500. Should I be concerned with this?

Thanks!
TAB

[Watermom]

With CYA of 50, your shock level would be 15, not 30. Don't worry about the phosphate level.

[Tabisme]

Will 15ppm take care of it if it was Brown algae? That is why I was assuming 30 ppm? If you don't think I have brown algae I will shock at 15 ppm. I just don't want brown/ mustard algae as I had a full breakout two years ago.... what a mess.

Thanks for the reply Watermom. I will.wait to see what anyone thinks about brown algae or not?

TAB

[Watermom]

I'm assuming this is a liner pool? You don't want to go higher than the recommendations in the Best Guess Chlorine Chart with a vinyl liner for risk of bleaching it.

[Tabisme]

Sorry Watermom... Somehow I missed your last post until now. Thanks for the reply! Yes it is a vinyl lined pool. When you say Best Guess Chlorine Chart.. that does include the far right column... correct? If I read things correctly about brown/ mustard algae, you need to shock at above normal shock levels, or did I miss something??

Thanks for all the help and patience! So much information to take in.. but well worth it!