question on Atman Chiller

[[JS]]

izzit good ?

[Cedric]

Depends on how you define good? I find it cheap and efficient in cooling my tank with 950watts of pumps, lights and stuff running my 3 feet. Fortunately, the atman was able to chill my tank and maintain at 25 even when the weather is so hot now. My greatest disappointment was the frequent cutting on/off of the chiller.

[[JS]]

my tank is 4x2.5x2 sump 3x1.5x1.5

pump around 200

mh light 300w

dunno enough .....

[BarraCudaTM]

Its powerful enough, I have 4x2.5x2.5 with 500watts of lights

[hamannbmw]

Its powerful enough, I have 4x2.5x2.5 with 500watts of lights

hi,

wats the pump u use for the chiller ?

I thought of connecting my return to chiller den back to tank, using eheim 1262, isit over power for the pump ??

[Eric]

hi,

wats the pump u use for the chiller ?

I thought of connecting my return to chiller den back to tank, using eheim 1262, isit over power for the pump ??

Use a ball valve to control the flow to the chiller, you dont wan too much flow else ur chiller efficency will drop due to lack of time for heat exchange.

[hamannbmw]

ya.. u r right.. but wats the suitable pump ? i'm intend to keep LPS without any pumps or tunze in the main tank... so trying to get a somehow powerful pump that can serve both purposes

[BarraCudaTM]

Flowrate shouldnt be a probelm. I couldnt understand why high flow rate will decrease the efficiency other than the excess pump heat.

[ervine]

water flows so fast that not enough time to chill the water?

[hamannbmw]

water flows so fast that not enough time to chill the water?

This is wat i heard too........... baracuda care to explain yr experience .....

[BarraCudaTM]

The water volume is fixed so running a high flowrate shouldnt be a probelm.

If you have a slower flowrate, the chilled water is colder than high flow. However, this chilled water is mixed with the tank water and will lower the tem slightly as the volume of the chilled water is lower.

Having a higher flowrate will have a warmer chilled water but with a larger volume. So you are mixing a larger volume of warmer chilled water to the main tank.

SLOW FLOW

colder temp

lower volume

HIGH FLOW

warmer temp

higher volume

To me, they are the same except when the flow is excessively slow that is when the chiller will detect a much lower temp than the actual temp. This usually affects chillers with water reserviors.

[typrobin]

The water volume is fixed so running a high flowrate shouldnt be a probelm.

If you have a slower flowrate, the chilled water is colder than high flow. However, this chilled water is mixed with the tank water and will lower the tem slightly as the volume of the chilled water is lower.

Having a higher flowrate will have a warmer chilled water but with a larger volume. So you are mixing a larger volume of warmer chilled water to the main tank.

SLOW FLOW

colder temp

lower volume

HIGH FLOW

warmer temp

higher volume

To me, they are the same except when the flow is excessively slow that is when the chiller will detect a much lower temp than the actual temp. This usually affects chillers with water reserviors.

barracuda does have a point...this way the chances of having a freezing spot(ie: the left side of the tank is not as cold as the right side) in the tank is much lower....

but anyone else doubt so??

[hamannbmw]

Its powerful enough, I have 4x2.5x2.5 with 500watts of lights

May I know wat pump u suing ? wat the flow rate ?