How to prevent overkill using a CL650 on 2ft

**daybreaks** · 26th May 2012, 18:00

As above; I am currently running a eheim 2215 on my 2ft tank. Primary objective is to cool the water which fluctuates between 29.8 to 30.4 degrees using the CL650 which I have.
However, I read that the canister that I'm using only has a flowrate of 620l/h while the chiller requires a minimum of 1800l/h to work efficiently.

I'm wondering if changing to an external thermostat would help since using an external pump to increase the flowrate would certainly result in a tornado in the tank.

**cheetf** · 26th May 2012, 22:23

Buy a bigger tank or a change to a smaller filter?

**Shadow** · 26th May 2012, 22:31

yes you can replace to external sensor or external temp controller.

**avex30** · 29th May 2012, 12:14

Cl650 over kill!! hahaha want to exchange CL 280 meant for 2 ft you can save on electrical bill too

**daybreaks** · 29th May 2012, 18:47

I typed wrongly,title should be CL450!

**avex30** · 29th May 2012, 19:50

Originally Posted by daybreaks

I typed wrongly,title should be CL450!

Still overkill!!!!

**daybreaks** · 1st Jun 2012, 07:50

Originally Posted by avex30

Still overkill!!!!

Yes,I'm aware of that too. Gonna fix an external thermostat to the chiller and hope things will go well.
Just wondering where does the external thermostat measure the temperature as I know that the internal one measures it from the internal water tank of the chiller.

**BFG** · 2nd Jun 2012, 02:13

Originally Posted by daybreaks

Yes,I'm aware of that too. Gonna fix an external thermostat to the chiller and hope things will go well.
Just wondering where does the external thermostat measure the temperature as I know that the internal one measures it from the internal water tank of the chiller.

The external thermostat will measure the water temperature directly from the tank. This, in my opinion, is a more efficient way than the old method. You will not be punished by using lower than recommended pump when using external thermostat. The lowest I've tried was with a 500lt/hr pump on a 2ft cube.

**Shadow** · 2nd Jun 2012, 13:32

External thermostat, i prefered to call it temperature controller, come with their own sensor. The sensor is attached to long wire. You suppose to put the sensor inside your tank

**daybreaks** · 2nd Jun 2012, 16:23

Any pics of the temperature to show? I'm not really an electronics person and a picture helps me to find it easier.
Went down to SLT just now,to find that acez instruments is closed today