i have a 46 bow, 2 400 watt metal halides, 9 watt UV sterilizer, CPR fuge, berlin skimmer, about 20-30 pounds of live rock, tons of frogspawn and hammer, nice big fan to keep the temp down, 3 damsils, lots of zoos and shrooms. for flow i have a korala 2, the return into my CPR from a fulval 304, and the return from my skimmer. and a great big carpet anneome. everything seems to be doing good exept some zoos i have. i went on vacation to canada for a week and had my dad watch the tank. when i got back i had more brown algee then i could handle and my solinidy was over 3. i got it back down to normal now, and everything seems to be great again, expept some zoos.