What about water chillers and radiators on the lights? Anyone have experience with them?
Daytime conditions should be 70-80 degrees without co2, 80-90 degrees with co2 until the last two weeks when daytime temps should be kept between 70-80 and co2 can be reduced to adjust for the lower metabolism. Night temperatures should be kept above 60 degrees to prevent stress. It is preferrable during flowering to have a night temperature drop of 10-20 degrees to stimulate flowering hormones and reduce stem elongation.
I find that low humidity causes stress on plants. I recommend 50-60% humidity until the final 2 weeks of flowering. At this point, the humidity should be lowered as much as possible to encourage the plant to seal and protect itself with additional resin. (I am able to get the humidity to go as low as 31%) I have been able to frost things up considerably this way. The higher humidity levels prior to final ripening reduce salt levels within the plant tissue and encourage healthy, more lush growth.
You never vegged at 18/6?What would one expect ifor the quality of the crop if their running a constant 71 degree's and 42% humitity during the 24 hour light cycle? I'm about 4 days out from pulling the trigger to a 12/12.
This is my first go at this.
I'm running one 600 hps, 2 t5 6bay 54t835's 3500k spectrum
25 plants one table.
I'm assuming the temp is going to drop 10 degree's during the night cycle.
Feeding 15 minutes every hour.
Neutral Cubes for growing medium.
Any advice or input would be greatly appreciated.
p.s. In Alaska so it's pretty dry and cold up here, temp and humidity are my main concerns. How much do I lose with the above circumstances if all the rest is good?
Thanks in advance.