[tang daddy]

Second what Tyler said, I only use mag pumps to mix salt would never trust one on my main system. I've gone through several return pumps from controlled to straight on/off a lot of them over time fail or get super loud on my system and have found that bang for buck with peace and quiet, the lagunas are work horses, after all even bk uses same housing block.
Also a few friends have used the fluval sea SP series return pumps with success.