Pool Stain Eliminator Kit FAQ's

First, you must determine if your problems and pool stains are coming from metals.  If you have staining, but you can’t brush it off the walls, you probably have metal stains.  If you have staining on your steps, take a vitamin C tablet and place it on the stain for about 30-60 seconds and rub it around a little bit.  If the stain lifts off the surface, you have metals.  If you have big gray blotches, you may have hydration.  Hydration is water trapped behind the pool surface.  It often looks like a metal stain, but is not.  If you have a heater and your pH has dropped below 7.0, you will have dissolved some of the metals into your pool.  If you use an ionizer, you will have metals.  If you use a salt generator, you will have iron in your water.  Make sure you know the source of the metals in your water to better prevent stains from returning.


Metals are naturally occurring substances found everywhere, including stone, soil and water. Rainwater is acidic and tends to dissolve the metals found in soil and stone, thereby increasing metal concentrations in surface and ground water. Furthermore, because all municipal and well water contains some metal, introducing metals into your pool is unavoidable. Galvanic corrosion, especially in salt water pools, and irrigation (reclaimed well water) are also common sources of metal contamination.
Additionally, stone water features, decking materials, plaster pool surfaces, pool chemicals, pool equipment, and lawn fertilizers are all potential sources of metal contamination. Marble, flagstone and granite, for example, naturally contain iron, which can leach into a pool after every rain. Salt used in all salt water systems also contains iron. Copper can be introduced into pool water from the heat exchanger found in the pool heater, from copper-based algaecides, or from mineral-based water purification systems. Manganese and nickel, also commonly found in pool water, are frequently in the source water used to fill pools.

Each Problem Eliminator Kit is designed to fix a specific pool problem and treat up to 20,000 gallons of fresh or salt water.  If you have a question call us at 954-764-7654.

Iron bacteria is a bacteria which consumes iron into it cell body and is resistant to chlorine.  When you have a rusty slime in the back of your toilet tank, you probably have iron bacteria in your pool.  If you have tried a stain treatment and the stain came back before a week or two without shocking the pool, then you may have iron bacteria.  With iron bacteria, if you use a stain remover, you will think your stain is gone, but the iron inside the bacteria has only gone from a rust color to a clear color.  The bacteria is still on the surface and the iron is still in the pool water.  To get rid of the bacteria you must kill the bacteria with a copper algaecide, which releases the iron into the water.  Then you must have sequestering agent in the water  and eliminate the iron from the water with CuLator Metal Eliminator.  It seems counter intuitive to add more metals (copper) to the water to get rid of the metals, but this is a unique case.

If your pool is 20,000 gallons or less, just use one kit.  If you have a 40,000 gallon pool, use two kits.  If you have a 30,000 gallon pool, it is up to you to decide.  If you feel your problem is not too bag, then try one kit.  If you aren’t sure, go with two kits.

The stains should lift almost immediately, or overnight.  If not, you may need to add more stain treatment to reduce all the metals into the water.  The basic treatment is about two days.   However, we recommend you leave your chlorine level below 1 for as long as possible to allow  CuLator to grab the metals out of the water.  DO NOT SHOCK your pool for several weeks.  If you shock the pool, you may force the metals out of the water and back onto the walls of your pool…not fun!  Therefore, it is best, to wait until the cooler months to do a stain treatment.

YES!  If you are dealing with the stain or discolored water kits.  You must drop your chlorine to zero, or the stain removers will not be effective.  Once the treatment is done, you can SLOWLY bring it up to 1, but you must not shock the water.

Yes.  Just follow the directions given in each Kit after reading them thoroughly.  Here is an example.  Each kit is a little bit different, but this will give you an idea.

If you start to develop algae, you can increase your chlorine level to 1 or 2  or another option is to add a small amount of copper based algaecide.  The CuLator will pick up the residual copper.

Leave the CuLator Metal Eliminator in for a month or two and then replace with another CuLator Ultra 4.0 just to be safe.  That should do it for the season, unless you let your pH drop below 7.0 or you add a lot more metals to your water and plate them out with a high pH.  The best way to prevent staining is to use CuLator all season.  If you are on well water, use a weekly dose of sequestering agent as a precaution.

Balanced Pool Water Guide

Review our Balanced Pool Water Guide to learn how to keep your pool water balanced and safe.  Balanced water is key to keeping your pool looking fresh and the water beautiful.