Green Water in the Pool

i think it is not because of iron, it may be cause of some bacteries or algs.

Check if the problem is excess of food, i meam good environment for creating algae. This may happen when the green develops quickly aftersunny days

Buy algecide with polymeric active: kill black, green, brown algaes by embracing, not allowing them to breath. Besides this it floculates because of its high molecular weight added to the dead algae and the remaining suspended sólids.

Label declares containing

(2-hydroxyethylen dimethyliminio-2hydroxylethylen propylen dimethyliminio methylen) chloride.

Take a sample of the water down to your local pool supplier and get the water tested... they will tell you exactly how much of each of the chemical or chemicals to put in. Let them know how many gallaons of waer are in your pool to treat.

Can you be more precise what are the filteartation flow pattren and do you suction sweep your pool and ,How your Pool water balanceing system works ,How do you top up your pool.

The green is not iron but copper CU - use a an iron remover let your pool lay for a night and then rise your filter - dont backwash

Sorry, buddy, about the most expensive home accessory you can have is a pool, and that includes a teenage mistress. Neutral pH makes most algae and bacteria happy. The only algecide that worked worth a damn was a copper sulfate which has now been banned, but (nudge, wink) can be replicated by a resonably facile home chemist. Far be it from me to give out a URL for something so illegal as that, but a quick check of a few chemistry texts dated late 80s or so might tell you WHAT YOU SHOULD AVOID. (ahem) The reason for the ban was the usual - EPA not realizing that "dosage makes the poison". I hope that this is of no help to you at all, as that would be a "bad thing".

Initial Algae bloom is due to the content of algae in the water supply - normally it's bio-neutral to the human organism, but unseemly in the cement pond. Heavy (and I do mean heavy) algicide use on filling, scrupulous chlorination, and dogged tracking of pH are absolutely necessary.

No joke here, you've got to measure and track all those variables EVERY DAY or you're SOL. It's easy to let it slide, and on a home pool it can set you back three to five hundred dollars (and I mean the real American ones) per month on remediation. On a health club or public pool the bills can easily go up by a factor of ten, and by a factor of fifty if you let it slide. Been there, done that. I took over as plant enginer for a health club that was spending $18,000.00 per month on chemicals. Simple record keeping and quick response cut it down to under $350.00/month. Did I get a bonus for that? I laugh, and hide from my creditors

I have owned three houses with pools over the past 20 years so you can take my advice or leave it as you wish but here goes for what it is worth.

1) quit using chlorine based sanitizers. They are a major hassel. They require constant attention, sampling adjustment etc. Use either a bromine based sanitizer or a peroxide based system. Once you are up and running, either will greatly simplify your life. I have to dose once a month. That is right, once a month and I live in Alabama with high temperatures, lots of algae etc. When changing over you have to be a bit carefull even to the point of changing your sand since any residual chlorine will cause copper to turn your water green and stain everything on planet earth. Ask your pool company for instructions on how to make the change over as smooth as possible. They are the experts in your area and will know what works in your area. If you go to one and their advice doesn't work, go to another. Even in the tiny little town where I live, we have 5 pool stores, some of them know what they are doing, some do not... Take samples to each of them, you will be surprised at the different results you get from each. The testing is a bit subjective with a lot of "by guess and by gosh" Find the one in your area that guesses right and listen to them.

There's a great site at poolcenter.com and click on pool talk. You will find more information than you can ever digest on anything to do with pools. Alot of these people posting are the experts in the business so give them a try!

Iron turns water red, color of rust. Copper turns water green, color of Statue of Liberty. Algae also turns water green, also known as "pond scum". Better take advice below and seek professional help.

The St. Louis Zoo once had a problem with Polar Bears (normally white!) turning green one summer.

They checked the water in their pool, it was normal.

They gave the bears a bath, no effect.

They tried bleaching, no effect.

They sat back and scratched their heads, it was a mystery.

They took a sample of the green fur.

They examined it under a microscope.

They had forgotten that Polar Bears have hollow hairs that help insulate them and keep them warm in the Arctic.

It was an UNUSUALLY warm summer in St. Louis.

They found ALGAE growing....INSIDE the bear's hairs!

They gave the bears a bath in algecide.

The Polar Bears became white one more!

1 - If it's green, it's not iron 2 - Most likely culprit is algae. Could also be green-tinted from high total Alkalinity, very high pH levels, after addition of large amount of Calcium Chloride with copper in solution...but probably algae 3 - Best solution to avoid most of the trouble, headache, constant monitoring, chemical & shock treatment weekly adventure, etc. is to go to a Peroxide-based treatment system like Baquacil, SoftSwim, or this generic one here: http://www.intheswim.com/Pool-Chemicals/Chlorine-Free-and-Alternative-Sanitizers/Splashes-Chlorine-Free-Pool-Chemical-System/ but with an algeastat/sanitizer. I'd follow your local certified supplier's advice for the changeover, and enjoy your pool without the burning eyes, straw hair, and faded swimsuits from chlorine. Oh, and as long as you keep it shocked (with H2O2, not the little bags of chlorine), you won't see the green again.

Is your pool blue ? May be water yellow colored, combined with blue pool its see green. See pool water in glass. If its yellow use only chloryde.