Funny, I run mine at 75°.
Cooling down my tank
- Thread starter lost66
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Anthony Scholfield
Valuable Member
i bought a couple of "sky genius" clip fans off amazon which are about 22 bucks each. I clip them to the rim and blow across the surface to keep my tanks cool in the summer. I think they work great. They have a rechargeable battery and use USB also.
Awingo1121
Community Member
May or may not help your problem but worked in my case. I got a window air conditioner that I can just run during the day in the room my tank is in. Cost $150 and now I don’t have to worry about the tank getting to hot
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lost66
Active Member
I decided I will install 2 x 120mm fans. One in cabinet and one in canopy. Unfortunately I have only 1 outlet available but it is broken and is always ON. Even if Apex shows its OFF, I see it provides juice. So right now manual run and when I will be able to find cheap EB8 I will have it automated.
One of my vents blows to the tank, second one is not strong enough.
I think my return pump is producing too much heat. It is running at 100%, it is Jebao DCP-2500. I shut down sump for few hours and noticed drastic drop in temperature so it has to be something in the sump.
Question: Buying bigger pump (also Jebao, budget constraints) will solve problem? Running bigger pump at lets say 50% doesn't produce much heat like smaller pump running at 100%?
I shut down sump around noon.
One of my vents blows to the tank, second one is not strong enough.
I think my return pump is producing too much heat. It is running at 100%, it is Jebao DCP-2500. I shut down sump for few hours and noticed drastic drop in temperature so it has to be something in the sump.
Question: Buying bigger pump (also Jebao, budget constraints) will solve problem? Running bigger pump at lets say 50% doesn't produce much heat like smaller pump running at 100%?
I shut down sump around noon.
harley32907
Valuable Member
Glass lids are your problem, its easy to heat water than to cool water. A fan across the top or in the sump will cool the temp, but it will take time
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lost66
Active Member
First thing I did was to remove these lids. I got the with the tank so I thought why not to use them, evaporation in 240g tank is pretty serious. I have 20g ATO tank with float sensor. This is new setup and I am just adjusting things here and there.
It is DC pump but I just realized that I turned off the pump and the temp probe was still in the sump...
It is DC pump but I just realized that I turned off the pump and the temp probe was still in the sump...
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lost66
Active Member
Yesterday I got 3-12v power supply and I was able to check fans. 120mm I expected really high air flow and it wasn't like that so I decided to install 2 fans in the canopy. And it worked. During the night I got the best temp drop I have ever noticed in my tank. Problem solved I guess 
I installed fans at 7pm.
I installed fans at 7pm.
hans4811
Active Member
This is exactly what I did !! Best 15 bucs I ever invested ! Keeps my tank at 79F all day long, and I live in Florida ! I keep my AC the same, and have similar equipment...a UV AND a Algae scrubber...so more heat. I plug it into my Apex ESB and have a simple statement to turn it on if it gets above 79degs. It'll turn on and off a lot during the day, and I'll leave one of the cabinets open as well on hot days, but better than a chiller ! This is in my sump btw...My tank ran 82 max no issues. Bought a $10 6" clip on fan for the sump.
Tank now runs 79.
Evaporation went up from 1 to 2 gallons a day but thats how it works. My tank is a 120.
Its the poor mans chiller.
I even have a chiller in the garage but dont use it lol.
Cheapest solution and what I used what the 6" clip on fans as described above going over my tank. Brought it down to manageable 80 degrees. I hooked up the 6" fan on a Ranco temp controller to come on/off at certain threshold.
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