I've been using Jack's Magic Purple Stuff successfully for several years to prevent metal staining in my salt water pool (I use a SWCG for chlorination).

Lately, I've been pretty active on this forum learning ways to save money on chemicals.

I've noticed Kem Tek 338 Metal & Calcium Remover is a bit less expensive than Purple Stuff. However, I noticed the Purple Stuff is specifically formulated for salt/high TDS pools (Jack's Magic states it's much more effective than other sequestrants in such conditions); there is no mention of this on the Kem Tek product.

I've emailed Kem Tek, but I can guess what they will say though. While I'm waiting for a response, do any of our experts here know if the Kem Tek product is just as effective as the Purple Stuff in salt/SWCG pools?

Thanks.

PS - As discussed before in another thread of this forum there is a question about whether or not I still need a sequestrant, but I'll save that question for another time once I'm able to conduct an experiment suggested by PoolDoc (Ben).