Quote Originally Posted by PoolDoc View Post
Yeah, manufacturers do that sort of thing.

Remember, I told you that my impression of the Periodic guy is that (a) he's a real chemist and (b) he REALLY wants to make a financial killing.

However, if the CuLater does not get fouled with oils and such, based on the chemical mechanism described, it should work indefinitely. Obviously, that wouldn't fit well with the Periodic guys plans to get rich, so it's not real likely he's going to tell you that.

What's happened with these sorts of products in the past is that somebody discovered a perfectly valid niche product like Culator, but then discovers that a pool niche product will NEVER make him rich, so he tries to force EVERYONE into the niche. I suspect that's happening here.
Not sure if I want to try an unproven product, but if I decide to try it, which one should I try that would give me the best chance of good results for the buck, 1ppm, 1.5ppm, or 4ppm? Would it make sense that the 4ppm one would last much longer than the 1ppm or 1.5ppm? BTW, according to their website, they recommend replacing it every month (perhaps the every two weeks recommendation in the Amazon reviews was for stain removal? Currently I have no stains). If what you said about lasting indefinitely (seems like at some point it would get saturated?) is correct, I'm wondering if I can get by with just using one per season. That would save me money over using the Purple Stuff.




+ We think HEPD interferes with most metal tests, but we're not sure. Taylor has not been really helpful on this.
+ Pool stores are almost certainly worse than the testing YOU can do.
So it sounds like I may not be able to get accurate results regardless if I test myself (what kit would I need to buy?) or if I have a pool store do it. Might I at least be able to tell if I have any metals or not even if the actual level isn't clear?

Also, are you able to comment on these items I mentioned in my previous post?

1. Is it true my SWCG is the cause of the problem, as I was told, by separating out the trace amounts of iron present in the salt? BTW, I have two coworkers who also use a SWCG (one has a vinyl pool like mine, and the other a fiberglass pool), and they both have the same issue, making me think the SWGC process may actually be the issue. Your thoughts?

2. Is the Purple Stuff actually allowing the filter to capture the metals as quoted here on their website "...The stain removers will lift the stain off the surface, but its The Blue, Pink, Purple, or Magenta Stuff that will remove the metals from the pool and into the filter..." so when I backwash I'm getting rid of the collected metal?

3. So if the salt is the source of metals and the chlorine generation process is separating it out so it can attach to the pool surfaces, are you saying the Purple Stuff at some point will stop working? Or am I likely removing the metals at a rate that will allow the Purple Stuff to keep working as long as I keep up with the maintenance doses?

Thanks again!