I have two Rena XP3 canisters on my 150g, one of which dates back to 2006 and they are still running.
problem is, I'm not sure if anything today compares to these. they are no longer made.
When they eventually die, what can i replace them with? For the price of the FX6 (about $540 up here in Canada) I'm really not impressed with the reviews. leaking valves, ****ty ribbed hoses and ****ty clamps etc.