auto temp control

[thefishguy]

I am looking for a device that will turn my fans on when the temp gets so high and will turn my heaters on when them gets to low. I have seen one but it was 200 dollars. I have just solved my auto top off dilema, now I am looking for a solution to this problem.

 

[DragonForce]

I have a heater with an external temp controller and it keeps my temps right where I want them(80-81) and I run the cooling fans on the same timer as when my lighting comes on. I really could not see spending alot of money just to have the fans come on and off. I would just have them come on when your lighting does.

 

[thor32766]

i agress i have a computer fan that is hooked up to my lights. When they turn on it turns on and when they turn off they turn off. Keeps my temps great to.

 

[thefishguy]

I am doing the same thing right now, but I would like to have the fans on only when I need to, plus I have had trouble with the temp control of the heaters, they are inacurate. I was wundering if there was a device that controlled this stuff.

 

[hcuellart]

There are, but as you have seen they don't come cheap... Medusa temperature controllers are among the best there is... Though they are used with chillers and heaters...

 

[afilter]

I cannot help you with the fans, but I recently switched to a WON heater with digital control. Very accurate and cost no more than conventional submersiables.

http://www.aquariumadvice.com/viewtopic.php?t=64499&highlight=

HTH,

 

[bromion]

I think you can make a very simple circuit yourself if you are handy with electronics. All you really need is a temperature cut-off thermistor, like the one at the following link, and some simple wiring and resistors. If your fans are DC (like computer fans) and use a few amps or less, it should be relatively straightforward.

http://www.thermodisc.com/productDetail.asp?ProductID=2

I run my fans all the time since I have 400W MH lighting!