i found a guy selling a A.E tech media melter 600 calcium reactor that is rated for up too 600 gallons for an awesome price. i have a 90 gallon with over all water at 120 right now. i am planning on a external refuge and possibly a frag tank bumping it to about to about 180 gallons in the end. do you think i can do this or will i be over killing it and possibly never get it dialed in? any suggestions? thanks all