Salt Water Pool Is Light Green Color

by Annette Meares
(Myrtle Beach, SC)

I just changed my above ground pool into a salt system. It has a green tint to it. What am I doing wrong? I have had this pool for a couple of years and I have had not previous problems.


Do we add the same algae products to the salt system that we did with the old chloine system?




Thanks for the question Annette

If it's a solid green, it's probably algae. If the the pool water is a clear emerald green, it's more than likely a high metal contect.

You need to use a metal sequestrant. Since you increase the chlorine level, especially if you used calcium hypochlorite (granules) or a salt water generator, it may raise the pH level.

This will cause the copper to fall out of solution. Here are some very good metal sequestrants:

ProTeam's Metal Magic

Jack's Magic the Pink Stuff (regular)

Blue Stuff (fresh plaster)

Purple Stuff (for salt water pools) are some of the top sequestrants. You'll want to get a metal sequestrant that is based on HEDP, phosphonic acid, or phosphonic acid derivatives. In the long run, you might need to drain 1/3 - 1/2 of the pool water to get rid of the copper.

You may have caught it early enough to have it form into solids and backwashed out. Hopefully it won't stain your pool. Iron stains are one of the most difficult stains to remove.

If you're talking about algaecides when the question said "algae products", if you keep your chlorine between 1.5 - 3.5ppm, there shouldn't be any need for an algaecide.

Swimming Pool Chlorine

Pool Shock

Pool Chlorine

Chlorine Tablets

Pool Chlorine Tablets

But, if you want to use it, be sure to get a PolyQuat 60. This contains no metals and is safe for vinyl liners. Be sure to check out my pages on salt pool and salt chlorinators:

Salt Water Swimming Pools

Chlorine Generator

There lots of great information on the pool Q&A page for salt pools:

Swimming Pool Questions and Answers

Hope this helps and have a fun and safe swimming season. BTW...I had some of my best golf games at Myrtle Beach, not to mention a few Spring Breaks.

Robert

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