Ok, so I'm not a complete noob, but I do have a question about MPS.
I have a fresh fill in my 400 gallon spa. I added 80ppm CYA and have been using bleach to sanitize.
Is there a reason to add MPS? And if so, when do I do it? It says it's a non-chlorine oxidizer, but isn't chlorine an oxidizer too? So why add MPS?
Does MPS go away after a day or two like chlorine bleach does? Or does it stay like CYA?
Last, I used borax in my water before the refill and I noticed that the water was prone to get sudsy. I feel this is more from the spa additives rather than bather waste. We haven't had lots of sunscreen on and really the bather load is light. I'm cautious about re-adding any borax into the water. But I think I need to to help the chlorine stay in the hot water longer, or to be more effective at lower concentrations.
Thanks for any help.