led evaporation

[greg0385]

i know it wont be as bad a MH, but was wondering led light setup tanks, how much/if any evaporation are you getting from the lights? hopefully just regular evaporation due to air dryness.
thanks
greg

 

[mixer911]

Evaporation would be caused by relative humidity in your house. Heat does not cause evaporation, but trying to cool you tank with fans running across the water to keep it cool from a metal halide or other heat source would cause the evaporation. So I guess to answer your question, its all relative to the environment. Someone with a dry home and a no chiller and LEDs might evaporate just as much water as someone with a humid house and a chiller with Metal Halides running

 

[greg0385]

just trying to figure out how big of a ATO i need for my tank to run for about a week.

 

[mixer911]

What is your gallonage and type of your tank. Some specs and ambient room temps would help. But like I said, it will very on a lot of things. Mine during the winter when its dry out and my heat is running can evaporate up to 12 gallons in a week. During the summer since I run a chiller maybe only 5-8 gallons a week.

 

[greg0385]

150 gallon tank with a 75 gallon tank that making my sump/ato, house runs about 72-75 give or take 5 degree

 

[mixer911]

is the tank a open top or sealed glass top. Is the sump open also? Any fans or any other cooling devices going to be running.

If its a sealed top tank with open sump then prob 10 gallons a week would be enough.
If its open top (rimless or no glass) and open sump, then I would do at least 15-20 gal

 

[poolkeeper1]

My 105 with 65gal sump with LED's uses about 2 1/2 gals a day, Every day during the winter with house temp around 72 on the heat Thermostat (I'm Cheap) Put on a sweater!
Bill

 

[greg0385]

My 105 with 65gal sump with LED's uses about 2 1/2 gals a day, Every day during the winter with house temp around 72 on the heat Thermostat (I'm Cheap) Put on a sweater!
Bill

lol i tell the g/f the same thing(she always wonder why the electric is high) always adjusting the air/heat

 

[mixer911]

My 105 with 65gal sump with LED's uses about 2 1/2 gals a day, Every day during the winter with house temp around 72 on the heat Thermostat (I'm Cheap) Put on a sweater!
Bill

This is a good example. Bill is running LED's and I am running halides. His evaporation rate is higher than mine. A lot of variables will determine the evaporation rates, not just lighting.

 

[greg0385]

wow, would have put money on MH using more water due to heat and using more fans.

 

[mixer911]

My 105 with 65gal sump with LED's uses about 2 1/2 gals a day, Every day during the winter with house temp around 72 on the heat Thermostat (I'm Cheap) Put on a sweater!
Bill

This is a good example. Bill is running LED's and I am running halides. His evaporation rate is higher than mine. A lot of variables will determine the evaporation rates, not just lighting.

 

[zef004]

Before I switch to LEDs. I was going throw 5gals of water every 3 days. 3 hqi and open top. Now I have LEDs and a canopy I go throw 5gals 7-8 days. And my electric bill went down $120 this month. But I took down 5 mh lights. Replaced them all with LEDs. and needed a bigger heater for my 180