Hot tank

[ByzantineWV]

I have a metal halide light on my tank with no legs right now. My problem is that I leave my light on for 6 hrs at a time and by the time I turn my light off the temp. is 85-87. My light has one fan that I turn on an hour before the lights kick on and runs for 2 hrs after the light goes off.

 

[Bioload]

I have a metal halide light on my tank with no legs right now. My problem is that I leave my light on for 6 hrs at a time and by the time I turn my light off the temp. is 85-87. My light has one fan that I turn on an hour before the lights kick on and runs for 2 hrs after the light goes off.

Fans can help but ultimately it sounds like you need a chiller or a/c. If a window a/c unit would work in the room where your tank is I would go with that. Keep yourself AND your tank cool. We have had upper 90's to near 100F temps this summer and never had a problem with a/c and fans.

 

[reefrunner69]

Before trying a chiller, vent your hood as much as possible, and if you have room, add a 6 inch clip on fan pointed at the water, this will encourage evaporation which will cool the tank. I can keep my 20L at 76 to 78 degrees with one clip on fan and I have a 250w MH.

 

[Holygral]

what size tank do you have? I run 2 x 250 MH four inches off my water on my 125 and have just 1 clip on fan that keeps it 78.5 to 79. Have my fan and heaters on a Ranco temp controller

 

[danbstrong]

what size tank do you have? I run 2 x 250 MH four inches off my water on my 125 and have just 1 clip on fan that keeps it 78.5 to 79. Have my fan and heaters on a Ranco temp controller

How high above aquarium is your light?

 

[ByzantineWV]

The light has no legs right now it's just sitting on top of the tank

 

[danbstrong]

The light has no legs right now it's just sitting on top of the tank

Id definately raise it up a lil airspace between the light and water itll drop a few degrees easily if not more that way and also keep your light free of excess salt

 

[ByzantineWV]

Thanks for the help

 

[54seaweed]

crack the lid and put a fan blowing in the back of tank
blow out the heat
I got a big improvement getting heat out of tank everything seems happier and not cooking

 

[danbstrong]

crack the lid and put a fan blowing in the back of tank
blow out the heat
I got a big improvement getting heat out of tank everything seems happier and not cooking

You have a lid over the tank??

 

[54seaweed]

yes I do
its a glass top , I have it to keep cats out of my tanks and my fish in , my dart fish are jumpers and my snails always wanted out so now everyone stays in the tank
I have a comp fan built into a bio-filter lid blowing in , crack lid about a 1/4 inch and haven't had a heat issue since .
it brings in cool air blowing out the hot air , it works great
as for bio filter it is packed with cheato rather than filter media houses pods and releases them as they will

 

[Ibrahim]

How high above aquarium is your light?

He said 4 inches.

 

[54seaweed]

I keep my lights about 6 inch off top of tank
I have 2 aqua-life dual fixture t-5 lights 2 10k day spectrum and 2 blues and a blue/red led strip with 15 bulbs
the led strip also has a air stone in it I keep it mounted a inch above the water pumping in more cool air with a small air pump , it never touches the water seems to help disperse the hot air out of tank
I've been thinking of adding 1 of these on back of tank http://aquatek-california.com/cooling-fan-series/#4-fan