Hmmm , then i wonder what was wrong with my previous ones. All stinkslike shit after 1-2 weeks in the refugium, like when u cycle rock like that. Anyway, i got my diy sump/refugium from danano. Pretty small so i think my lights "may" be sufficient. Anybody can give me some advise??...I have attached a pic of it. This pic was taken from danano's sale thread. It's the blue tub behind