MH + chiller users - do u use a fan?

[Achilles Tang]

How many of you actually feel that the use of the fan has helped your chiller to run less often?

Would be interesting to hear some feedback!

[roidan]

how about using MH without chiller and without fan?

[SharkBait]

Im using fans but not to aid with evaporation, its to draw the heat out.does that count?

[BarraCudaTM]

An powerful fan blowing directly at SE bulbs can easily take away at least 70-80% heat off the MH if the clearance is 12" or more.

[SharkBait]

An powerful fan blowing directly at SE bulbs can easily take away at least 70-80% heat off the MH if the clearance is 12" or more.

im not blowing at the bulb, just drawing out the hotair

[terryansimon]

what is the minimal/recommended height from light to water surface?

[Terryz_]

Im using fans but not to aid with evaporation, its to draw the heat out.does that count?

Bro, you using fan only or with chiller... i finding if anyone manage to keep water temp at 26-27 with MH one and without a chiller...

[IanJ]

In the past when my old Teco was struggling with the rare UK summers, i used a large fan blowing across the top of the tank. No question it made a significant difference to the time that the chiller ran. The fan pulling the temperature down faster than the chiller could.

It must add up to quite a cost saving over the year.

I do not use a fan here, just a chiller and some nice air-con

[SharkBait]

Bro, you using fan only or with chiller... i finding if anyone manage to keep water temp at 26-27 with MH one and without a chiller...

im using Teco 680

[Cookiemunster]

Fans are important whenever my MH turns on. Its my safety belt in case my chiller stops or malfunctions or chiller pump fails etc.

It also helps me speed up evaporation so my auto top up water gets to top up more often through my kalk reactor, ie more kalk into the tank.

And saves me electricity cos my chiller runs less often.

[SharkBait]

Fans are important whenever my MH turns on. Its my safety belt in case my chiller stops or malfunctions or chiller pump fails etc.

It also helps me speed up evaporation so my auto top up water gets to top up more often through my kalk reactor, ie more kalk into the tank.

And saves me electricity cos my chiller runs less often.

oh yah, wheres the kalk reactor you promised us?

[BarraCudaTM]

im not blowing at the bulb, just drawing out the hotair

drawing air out is not as good as blowing at the bulb

[SharkBait]

drawing air out is not as good as blowing at the bulb

but i thought blowing at the bulb will shorten the lifespan of the bulb?

[BarraCudaTM]

but i thought blowing at the bulb will shorten the lifespan of the bulb?

not for SE bulbs, its not really possible for you to cool the MH with a fan to a point where it burns below its normal temperature.

When blowing directly at a SE bulb, you are only cooling the UV shield which would not affect the internal temperature of the halide gas envelope.

[SharkBait]

ooh...so would it be better if i added another one for exhaust and one to blow at the SE?

[BarraCudaTM]

its yr personal preference

[bum]

i use a fan,

the chiller runs a bit less with it on,

but top up water is a nuisance

i top up abt 4l everyday.

[terryansimon]

bum...

off topic, but can I get to see your tank when I go collect the skimmer from you this Sunday?

[garan]

im not blowing at the bulb, just drawing out the hotair

i am also using it as a sucktion fun too. draw heat out from the light hood, although my hood had no canopy, but it really help.

i diy two computer fan on the hood and draw the heat that given out by MH out the surface water. Surface temp maint at about 25.6 and the bottom at about 25.3. B4 that the surface temp is about 26.2.

the water level seen ok, only need to top up once a week about 5l.