General Reef Discussion
I just got this http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=4411625738&rd=1&sspagename=STRK%3AMEWN%3AIT&rd=1 and a guy that got the same one said not to use the 6th stage with reef tanks why? The 6th stage is a in-line granular activated carbon filter. so should I use all 6 stages or just 5?