it may be caused by copper algaecides, ionizers, or corrosion of copper and brass pipes, fittings and heaters.

Shock treatment with sodium or...

Add cyanuric acid to get the level to at least 30ppm. Measure free chlorine and keep it above 3ppm until the green tinge turn to a pale cloudy green,...

What you have is a fungus called Paecilomyces lilacinus. High free chlorine levels (above 10ppm) and copper-based algeacides are usually effective....

If the chlorine level is above 5ppm you don't need to add more chlorine. If the level falls rapidly shock again, otherwise I would give it a couple...

Try a regular hand/pole vacuum rather then the robot. The robots have bags that won't filter as fine as most swimming pool filters.

Yup! Make sure to keep free chlorine level at least 3ppm to help destroy the remaining algea and help the pool water clear quicker.

Draining, cleaning and refilling is the quickest way to get your pool sparkling clear. However some pools need to be drained and filled with care,...

If the water is clear it is probably a metal problem - iron or copper are the most common.

If the water is cloudy and the walls have a film on...

Bleach would work well. The amount to use depends on the volume of pool water and the amount of algea. The quality of the bleach is also a critical...

Draining some water and treating with liquid chlorine would not create any problems. It will destroy any algea that has implanted itself into the...

You don't say whether the chrome is turning black with algae, or whether it is discoloring.

Also is the chrome really chrome or is it...

Algea growth is extremely slow at temperatures below 60 degrees F/ 15 degrees C. At these temperatures very little chlorine is needed.

If the pool...

The use of copper as an algicide is usually at a level below 0.7ppm. The EPA has set the limit for copper in drinking water at 1.3 ppm. See copper in...

A lot of my friends had this problem with Baqua after a year or two. We have all switched back to chlorine and are using mineral sanitisers to keep...

It's news to me. I very much doubt this could be true.

If it were, millions of people wouldn't be using salt-based chlorine generators, which...

Stains that appear on the liner are often stains or algae growing under the liner . I have heard that it can be killed by liberally applying ferrous...

Closing a pool with algae is not recommended.

If you are on a tight budget you could buy some copper sulfate crystals, dissolve them and add to...

the pool was perfect after that.

Well thats your opinion and well its your opinion.

I'd guess you might have Black Algae taking hold. You need to know and if it is, you need help. Get it looked at asap.

Mike I wrote a big topic in algae allready, we have well water that has a strong smell turns everything yellow in the bathroom, I didn't use metal...