Any luck with a small external phosphate reactor?

[peterhos]

Morning All

Space is getting cramped in the sump of my Red Sea reefer 250. Has anyone tried a small external phosphate rector? Any luck? Is it noisy? Thanks for any replies.

 

[Doctorgori]

I got the IM small reactor (medium and small)
They work “OK” …
…noise level OK
my issue is with the fine tune adjustment
(medium size with biopellets) smaller model; …disassembled ATM for cleaning