What are the little black spots in my fiberglass pool?

When you see little black spots on your fiberglass swimming pool, it could be a few things.  First, try to remove them with a vitamin C tablet.  If that doesn’t work, then have your water chemistry tested to see if you have a high phosphate level.  If you do, use a phosphate remover then balance […]

Review of CuLator Metal Eliminator with Before and After Shot

Before and After CuLator

This pool was greenish from oxidized iron and lower alkalinity.  After the chemistry was balanced and a CuLator Ultra 4.0 was used to remove the metals from the water, the pool stair stains were gone, the cloudiness was gone, and the metals were out of the pool water. Here is the review: Hi,     I […]

Use CuLator Ultra 4.0 to Remove 0.4 Copper from 31,000 Gallons

CuLator Ultra 4.0

I have 0.4 copper in my pool currently. I am treating my pool for almost 3K ppb phosphate now. I used a sequestering agent a few weeks ago (Bioguard/SparkleUp) and then cleaned the filter with no reduction in copper. Do I need to add another sequestering agent to the water when I add the culator […]

Periodic Products Introduces CuLator InLine Pro

We have been working hard at Periodic Products to manufacture a filter with CuLator Metal Eliminator inside…and we have done it!  After years of research, we have manufactured a pleated filter with the power of CuLator!  Plumbed into the swimming pool circulation system with 3/4″ connections, the CuLator InLine Pro allows a replaceable CuLator Filter […]

Iron Bacteria Eliminator Kit Worked!

Before and After Iron Bacteria Eliminator Kit

Many thanks to Chris Walkerow at Periodic Products and Fred Schweer at Pool Rx for incredible help with our pool. We’ve been dealing with gray/brown discoloration on the bottom of this pool in southwestern Pennsylvania for several years without success. Finally last fall, I reached out to Pool Rx whose sanitizing product we use. Fred […]

Kids Hair Turned Green From Pool Water

Here is a recent question we received that I wanted to share: I have a question regarding the Metal Eliminator. We have copper in our pool (about 2.0) no staining or water changing color… just the kids hair is getting a green tint. Do we have to use the Metal Sequester first (I did use […]

Jack’s Magic Stain ID Kit and Periodic Products No-Drain Metal Stain Eliminator Kit

Pool Stain Eliminator Kits

Here is a question we were asked by Glenn in Orlando: In the past, I used “Jack’s” stain test kit. With that kit, I needed to use their “O2 Safe Shock” in addition to the copper stain remover, in order to get a reaction. Will your stain remover kit work for copper without this added […]