Our calculator uses photosynthetic photon flux ppf along with wattage and cost to calculate the efficiency coverage area and harvest potential of different grow light fixtures.
Grow room lights off temp.
Led s emit no ir so to achieve similar metabolic rates found in hid or greenhouse conditions at 78f air temp led growers need to run the room air temp at 83f 85f.
Start date nov 15.
Thus with light sources rich in ir an air temp of 78f is functionally 83f 85f to the plants metabolism.
Grow room temps in flower when the lights are off.
Keeping the lights off temperature within 10 15 f.
Ideal grow room temperatures are more than just what shows up on a single thermometer in your grow room.
If you re in a situation where the temperature is climbing too high at specific parts of the day then you can change your light schedule so that your grow lights are off during the hottest part of the day.
I once grew in an uninsulated loft with just a light and nft table in the middle of winter literally just the roof tiles between my plants n outside 8 northern lights.
I had a aquarium heater in my nft tank set to constant 22c.
A common mistake is to purchase an air conditioning system that s far too large or small for the grow room.
I use one of the small oil filled heaters for my room.
For indoor growers lighting is all important.
Change the light schedule.
We developed the grow light calculator to provide a scientific way to analyze and compare grow lights.
There are also grow rooms that will need even more lights.
For example in the vegetative stage your plants need 18 hours of light each day.
Grow lights have gotten more and more powerful as technology continues to advance but at a certain point 2 lights can cover an area more effectively than 1.
While it s easy to give you the ideal indoor grow temperature between 65 f and the low to mid 80 f s we know that it s not simply the room temperature alone that helps you get the yield you want we re going to go over the affect temperatures play in your grow room from the.
Be careful though and start the temp setting low and i have mine hooked to a timer so that it only comes on for.
Lowering the growroom temp below nighttime temps during the first two hours of lights on is sufficient to retard the stem elongation otherwise induced by a positive dif.
Lights off temps dropped below freezing towards the end and were never higher than 8c.
Try not to go over 78 or so for the high and try to stay about 65 when lights off.
The best lights off operating temperature is generally about 10 15 f 5 7 c cooler than the lights on operating temperature.
This temperature drop is significant enough to allow a plant to go through its normal process of rest and transpiration but is not so great that problems are caused.
This technique called a.
