How Do I Test Magnesium Level On My Pool?

by James Gunter
(Neridian, MS )

I have done everything I know to do to clean pool and cannot get rid of green algae in shallow end.

Someone told me today that in could be magnesium level too high?

Is that possible?

How do I test magnesium level?

Please help...




Thanks for the question James

An algae problem is normally due to a low chlorine level. I just answered a question in this post:

Why Can't I Clear My Green/Blue Pool Water?

These are very good as well:

How To Clear Up A Green Pool In Woburn

Green Pool (Algae) Re-Occurring..Pictures

For the next part of your question:

There are actually two names: Manganese and Magnesium.

Manganese is one of the more difficult mineral pool problems. Many times it comes from well water.

Manganese will show up as a brown-black stain or discoloration on the pool.

It can be treated with a mineral treatment (chelating agent).

In simple terms, the metals bind to the chelating agent and then are eliminated.

The may sound like a metal sequestrant, but it's not, so be sure you're getting a chelating product.

Magnesium is close to calcium but is much more soluble in a pool. While it does contribute to the total hardness of the water, it doesn't contribute to staining.

If manganese is suspected, you can take a sample of your pool water to a local pool store for analysis.

I believe some LaMotte Pool & Spa water testing products can also test for manganese.

I hope this points you in the right direction.

Have a fun and safe swimming season.

Robert

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Water Testing Kit.

eBooks Are Perfect Desktop & Mobile Device!!

swimming pool care, basic pool care, above ground pool maintenance, inground, salt water

Click Here To Learn How This eBook Can Save You TONS Of Time & Money

Click Here To Learn The Best Way To Clear Up Your Pool 

Learn How To Be Your Best. Click HERE To Get Started.

Recent Articles

  1. Cost Estimate Of A Pool

    I am wondering how much a fully heated fully installed with liner pool would be.

    Read More

  2. Painting A Salt Water / Concrete Pool

    I am repainting my salt water pool that is concrete. I am wondering if it matters what color I decide to go with?

    Read More

  3. Use of two filters

    I have been using a sand filter on and above ground pool and I recently purchased a cartridge type (Hayward Xstream). My question is whether I can put

    Read More