i am interested in the rodi .how old are the filters?

so i have a couple of tanks. one is a 100 gal and the other is 55 gal. willing to sell or trade for other reef keeping stuff. I am setting up a 40 breeder. well i say that i have built the stand and sump, but have not bought the tank. i will entertain any offers .thanks

I have a 100 drilled for 3 bulkhead on back glass ,and a 55 that is also drilled on the back it can be used for a sump. I would like to get 100 for both. thanks mike