[joshvito]

I have a JBJ Reaction 4stage Canister Filter EFU-35.

Has anyone ever replaced the impeller with a larger one to increase the flow through the filter?
Your answer does not have to be specific to this filter, but any hardware upgrade to flow suggestions would be helpful. I have heard that Eheims can have their pumps replaced with larger pumps.

Also, please assume the plumbing is efficient as possible.

 

[Muirner]

I looked into trying this with my XP3 after reading your post, and the most i found is the XP3 impeller can fit in the XP4 housing, but no evidence it is backwards compatable.

 

[joshvito]

I asked the manufacture, and they say each impeller is "slightly" different. although they look exactly the same in the package.