Temperature Control....gotta loose some heat

[christyf5]

I installed a couple of radioshack fans in my light hood and they work like a charm. During the summer months when it gets really hot I also have a 1/4hp chiller that gets the job done.

[jgoldsney]

Well it looks like Fans are a viable solution.

I put a 120v small house fan blowing in from the back corner (it is a corner tank) and I lifted the lid with some blocks 1/2" to allow the hot air to be forced out. I ran my hallides for about 5 hrs last night and the temp only went up 1 deg.....now only if this will hold true over the summer.

[howdy20012002]

do u have a lid on your tank?
If so, I would think that is the major cause of your heating problem. I think that the lid would act like a magnifying glass under the MHs...
I dunno..but just my opinion.

[Willow]

with 400 watt lights you are probably going to have to invest in a chiller.

[jgoldsney]

Hoping not to have to go the chiller route....the fan seemed to do the trick now all I have to do is wait till summer.

[Funky_Fish14]

I have dual 400W halides, and have an enclose canopy. I also have glass covering my tank. Two 12V fans running while the lights are on prevent them from raising the tank's temp even a degree. I would consider trying this if you can. I think the enclose canopy and only fan openings allows more efficient air circulation for providing fresh/cool air and getting the heat out.

Chris

Edit: I also have no sump, I have a 100gph flow 23g refugium above the tank(sitting directly over the lights too) that needs to be heated during the day sometimes to maintain a proper temperature.

[TheReefGeek]

Definately install some fans right into your hood. You can do a few configurations, like one blowing in, on blowing out, or 1 or two blowing across to a vent in the other side.