mister crabs Posted February 1, 2008 Share Posted February 1, 2008 I am ditching the top of my oceanic biocube 29 gallon in favor of a PFO 175w MH w/ 2x24w actinics. My question is how high should it be off the water? The tank measures 20" x 20" and the fixture is 16x12". I was thinking about 8". Is this too close? too far? I have seen tanks w/ halides 1-2" over the water but that seems too close. thanks for your help! Quote Link to comment Share on other sites More sharing options...
jayR Posted February 1, 2008 Share Posted February 1, 2008 I have had tanks that were about 4-8 inches above water w/ no issues. Depends on reflector & spread wanted over the area. Of course the lower the hotter but higher par ratings. Quote Link to comment Share on other sites More sharing options...
spectra Posted February 1, 2008 Share Posted February 1, 2008 I think I had that light 6 inchs off the top of my sons 29. You can always adjust it up or down so just try it and see what happens. Quote Link to comment Share on other sites More sharing options...
aqua-ed Posted February 1, 2008 Share Posted February 1, 2008 Sorry to kind of hijack this thread...Do you (or anyone) put a covering of some sort over your tank? I am putting in some PCs that clip to the side of the tank (elevated clips, of course). I have an anorexic goby (a whole 'nother issue) whose suicidal tendencies may cause him to throw himself out of the tank. That and I don't want to speed evap anymore, my office if humid enough now. Any suggestions? Quote Link to comment Share on other sites More sharing options...
mister crabs Posted February 1, 2008 Author Share Posted February 1, 2008 go to home depot and get some eggcrate and cut it to fit. Its sold as a cover for commercial lights. kind of like you see in office buildings. should keep him in. If you want to cut evap then you need a glass top. downsides to glass tops is it reduces light and gas exchange. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.