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05-17-2008, 06:25 PM
| #1 (permalink) |
| Medium Fish  Join Date: Feb 2008 Location: Staten Island, NY
Posts: 391
|  Overheating... First day with the MH, and man it raised my temp to 84F! Looks like I'm going to have to figure out a way to lift them above the water and put fans across the surface. A chiller is out of the question, way too much money. Does anyone see a problem with creating two lifts with 2x4's which will sit at each end of the light? It would be totally stable and, niether would be near a bulb. I'm going to keep the MH's off until I get this figured out and get my hands on some fans.
__________________  20L Planted with CO2, fertilizers, VERY high lighting and community fish 72bow SW about to start adding corals |
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05-17-2008, 06:43 PM
| #2 (permalink) |
| Super Fish  Join Date: Mar 2005 Location: NE Indiana
Posts: 2,239
| My mh lights are about 6 inches off the top and about 8 inches from the water surface. Fans help and running a fan across the surface and across the surface of your sump will help. If that fails then you may want to time your mh lightis to come on in the evening rather than through out the warmest part of the day.
__________________ 75g reef 29g reef Living the salty side of life  |
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05-17-2008, 08:50 PM
| #5 (permalink) |
| MFT Staff  Join Date: Jul 2003 Location: Columbia, SC
Posts: 8,068
| You can essentially build something like my PVC setup with wood, though unless you finish it, it might look a little to distracting IMO. I like PVC because its not huge and won't really catch your eye as fast as wood and its light and i can move that easy. Have you thought about going to look at some piping or something along those lines from a hardware store? That is if you cared about looks....if not wood is simple and will work.
__________________ Matt Check out my new website! - Coming Soon!  |
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05-17-2008, 10:05 PM
| #6 (permalink) |
| Super Fish  Join Date: Feb 2005 Location: ft. lauderdale
Posts: 2,531
| how far from the surface do u have them? i had the same problem and since adding the fan my temp goes up to about 81-82 which is fine..... u dont really want the temp swing to be more than 4-5 degrees
__________________ 125g Reef 72x18x22 - 250w mh's/T5 actinics, MRC MR-2 skimmer, Koralia #3 & #4, Phos reactor, OR2500-return, DIY overflows, DIY 55g sump with fuge...300g in the works!  |
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05-17-2008, 10:38 PM
| #8 (permalink) |
| Super Fish Join Date: Feb 2005 Location: ft. lauderdale
Posts: 2,531
| definitly more evaporation but its worth it if wer talking about wether the tank is stable or not
__________________ 125g Reef 72x18x22 - 250w mh's/T5 actinics, MRC MR-2 skimmer, Koralia #3 & #4, Phos reactor, OR2500-return, DIY overflows, DIY 55g sump with fuge...300g in the works! |
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05-18-2008, 04:06 AM
| #9 (permalink) |
| Medium Fish Join Date: Feb 2008 Location: Staten Island, NY
Posts: 391
| If it is stable, but at 84, is that okay? I was figuring 84 is too high whether it stays there or not. Right now, the lights are maybe 2-3 inches off the surface of the water. I'll be improving on whatever I use, but the wood will be a quick fix which I can get done on monday.
__________________ 20L Planted with CO2, fertilizers, VERY high lighting and community fish 72bow SW about to start adding corals |
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05-18-2008, 07:57 AM
| #10 (permalink) |
| Super Fish  Join Date: Apr 2006 Location: Penn State
Posts: 1,809
| 84 degrees isn't the end of the world, but get it down if you can. You don't want to go any higher than 84. Yes, fan will create a lot more evap, but that's how they keep the tank a little cooloer. So you will need to keep up on diligent top offs if you don't have a ATO. I would definitely move the lights up a little higher. If you tank isn't too deep you could move them up.
__________________ 65g SW Reef |
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