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#1
12-27-2010, 06:10 PM
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I have a 3' square tank with canopy. I run 2 150w mh, 2 double strip T5's.
I struggled with my temp for a bit. Out of the top I cut a 20" by 10" rectangle, covered it with that black gutter guard mesh. I also cut in a 4" square fan which blows air up and out of the canopy, it runs 24hrs although now I'm thinking I should turn it off at night. I have 2 - 6" clip on plastic blade fans mounted inside the canopy, 1 directed at the water surface. They are timed to come on when my 1st T5 comes on, and off when my last light turns off. I recently accidently turned off the square fan for 2 days, my temp went upto 82 degrees. Otherwise my temp drops to 77.1 at night, and maxxes out at 78.6 in the afternoon. 
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#2
12-27-2010, 07:42 PM
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I think the upward vents are a good idea, although not sure if I need to fan air out, or let convection carry the heat. At least 2 in the sides to blow across, and I'm trying to figure out venting.
I've been looking everywhere for some small clip on fans, but it's not fan season around here I guess. Hydroponics shop had one, but almost 50 bucks. I'm really close to a Profilux to manage all this stuff now, and I hope to run without a chiller as it's pretty loud. Volume on the TV is way up with that thing running, and I'll be more popular around the house without it.
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Brad
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#3
12-27-2010, 08:48 PM
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i run a cpu cooling system... full pics in my bowfront build... 4 12cm fans at 12000 rpm and a controller to tell me the air temp...two fans blow inward at the bottom of the canopy and 2 blowing out at the top... i am running 2x 250 in an enclosed canopy... between that and the clip on fran in the sump my heater comes on in the summer it does such a good job cooling...
alos got a great little clip on fan at wally world for 10 bucks... better pics in my thread 
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72 Gallon Bowfront Reef.. Hardware:2x250w Luminex Elite HQI Reflectors (Phoenix Hexarc Bulbs), Galaxy 2x250w Electronic ballast, Euroreef 130 Skimmer, Sedra KSP 7000 Retern... Live Stock: Pair of Hawaiian Flame Wrasse, Leopard Wrasse, Pink Streaked Wrasse, Pair True Percula Clowns, Potters Angel, African Flameback Angel, Orange Fin Tomini Tang, Yellow Assessor, Tailspot Blenny, Purple Firefish.. 45 G FW Asain Barb Community tank. Last edited by ElGuappo; 12-27-2010 at 08:51 PM.
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#4
12-27-2010, 08:56 PM
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+1 on the CPU fans, get a 12V adapter and get a 6" CPU fan. Works great, lots of air movement, low noise, and best of all, cheap. If you're venting outside try a used building material place for an old bathroom fan and get a wall mount dehumidistat. I've been looking at doing this because if i have my fishroom window closed for a few days i get condensation on all windows in my house, and having the window open on some of these cold nights is probably costing a lot.
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My 150 In Wall Build
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