I'm starting a 55 gal reef tank and I'm wondering what kind of filtration to get. Wet/dry, refugium, berlin, or whatever..... what do you think works the best with the least maintenance and where can I get it. I'm trying to keep the price down so I want the best bang for the buck! Please let me know what other equipment is essential. Can I put crushed coral as a substrate, leave it bare glass, or live sand? I would prefer to use CC cause I already have that. Where is the best place to buy stuff on the net? THANKS!