enviraMENTAL
Aquarium Advice Newbie
Hi- I've been keeping fw fish for about 10 years now and have recently decided to go sw. I have been doing a little research before I make the leap into the hobby, but some info seems contradictory. Maybe someone out there can help. I intend to have a 30 gal reef tank. My main questions concern filtration. I have read books that recommend an underwater filter with a deep sand bed(3-4") and others that say anything deeper that 1.5" promotes anaerobic bacteria, which is bad, even thought the Berlin system depends on small areas of low oxygen. I would like to know if anybody uses the Berlin method in combination with an exterior cannister filter with AC, or is this unnecessary?.The only equipment I have now is basically my old fw tank and stand so I will be buying new stuff, I'm just kind of confused about which way to go.