Hey, I'm wondering how much these work. I have a 40g high tank with out a sump b/c i don't want one right now.... If I get a Hang-on refugium How well do they work? Is there other ones that you guys have tried and liked? I don't want that much stuff hanging into my tank tho.... I have to much as it is lol :) Well go any info on these Thanks :)
This is one:http://www.drsfostersmith.com/Product/Prod_Display.cfm?p catid=3618&N=2004+113080