LF/WTB Large calcium reactor
 

After having my RX-4 running on my 77 I'm beginning to realize it won't be big enough once I set up my 210. Anybody have an RX-6 or equivalent that's sitting around collecting dust?
I'll also need 2 tanks (either 5 or 10 lbs) and a Ph monitor. I've already provisionally sold my RX-4 so I'll need to get a whole new set up.