Thanks, for the reply and directions. Probably will not make it to the meeting Saturday as I have other plans but maybe next month. Are you guys mostly SPS or mixed reefs? I tend to be sort of low tech because I have a hard time with tech stuff. I don't get machines and plumbing, just don't understand it much, need to see things hooked up on somebody elses tank before I can do the same thing on mine. I run my thirty with live rock(100 lbs), live sand, good skimmer and a refugium with 4 kinds of caulerpa on 24 hour lights, tons of pods and critters too. I really believe in the power of algae scrubbers, plants can really clean your water for you. How do you guys do your reefs? I believe that there are many ways to run your reef sucsessfully, just have to find what works for you. Thanks, talk soon Teresa