I've been using the Purple Stuff successfully for years in my salt pool. Over on the Pool Forum (recently disappeared!) it was mentioned that the Pink Stuff is about twice as concentrated as the Purple stuff (60% vs 30%). They didn't seem to indicate there was any other difference besides concentration. Can anyone here confirm this?
Jack's Magic indicates that the Purple stuff is specifically designed for salt pools, but I can't find anything that explains what's different that makes it more suitable for salt pools than say the Pink Stuff.
I'm thinking if the Pink Stuff is twice as concentrated and suitable for salt pools, I can use it instead of the Purple Stuff and use half the dose I usually add, saving me money. Am I correct?
Thoughts? Can I safely/effectively use the Pink Stuff instead of the Purple Stuff in my salt pool? Or is there something else you would recommend?
Our pool was installed in 2004. It came with an Aqua Rite SWCG, so it's been a salt pool from day one. Being our first pool and not knowing any better, the first few years we always followed the pool store's advice. As you can imagine, we kept having to fight the start of algae blooms (slick liner, but no green pool), so the pool store recommended using an algaecide which I later learned contained copper. Of course this led staining later on, so I started using Jack's Magic Purple stuff, which has kept my pool stain free ever since. Btw, I stopped using the copper algaecide and switch to 60% polyquat at the same time I started using the Purple Stuff.
Fast forward a few years....after being frustrated, and broke, following the pool store's advice, I hit the internet and landed on the Pool Forum. Following their advice I greatly reduced my maintenance cost and time spent on maintenance. However, I still had the staining issue if I didn't keep adding the Purple Stuff.
Ben had me do a "bucket test" to check for metals (I believe this was in summer 2013). The results were negative for metals. Thinking perhaps over several years of dilution the metals were removed (we get plenty of rain each season), I stopped using the Purple stuff. Unfortunately, staining started to reappear on the steps, so I went back to using the Purple stuff, though I found I could get by with a lower maintenance dose than before.
So I'm thinking I'm always going to have to use a sequestrant, and I'm ok with that, but I'd like to minimize the cost of doing so.
Some things I've noticed:
1. The staining only occurs when running the SWCG. There is a return in the steps, hence probably why I notice staining there first, not to mention the steps are white making stains easier to notice.
2. I've never noticed staining after shocking (SWCG off).
3. I was told by the dealer who installed our pool that this is a natural consequence of using a SWCG since salt always has some impurities (I use high purity salt, 99%+?, with no additives).
4. As long as I add a maintenance dose of the Purple Stuff each week, there's no staining.
Sorry for the long post.