Re Use this?

Ive got a MJ 600 that I always had in a freshwater tank.Im fairly sure I treated that tank at least once with copper based meds.
Is there anyway to soak that pump or clean it so that I could use it again in a SW environment?

 

i believe that once it has been exposed to copper you can never use it in sw but im not too sure either. if i were you i would just go get a new one to be on the safe side. i dont think the mj 600 are very expensive. jmo

 

Soak it in some SW over night and test for copper. It also depends on the type of copper used. The fact that copper was used once is not a deal breaker IMO. Depending on the size of the tank you want to run it in also, in a 75 gallons system I honestly can not see it leeching anything substantial back into the system. There is always a small amount of copper in SW anyway. Just test for copper and see.

 

You could run it in a bucket of water with a quality activated carbon for a week or so and then it should be fine.