I would say you might have a third option by installing overhead misting, but I have never experimented with this and youd be screwed with low humidity in flower.[/quote]
According to local hydro store I would be looking at 4 industrial foggers and still fighting a losing battle.
Why do you need drainage to use the chiller for cooling? Run lines through a few iceboxs and back to chiller, it should be a closed loop system, no?
I have a three fan water cooled heat exchanger. Usually there used with unlimited water supply and drainage. I have the unlimited supply but not enough drainage. I was actually considering recirculating the water from a 250 gallon rez I have sitting outside since it will stay somewhat cold(winter) but the water might heat up too much over the 12-18 hours.
When plants are small you may still need to raise humidity even in sealed or semi-sealed room. You can use foggers from house of hydro to build homemade humidifier that works better than anything you can buy. https://www.youtube.com/watch?v=L5FTCsW9Zu8
Build it into an active intake for best results.[/quote]
This is awesome im gonna look into that.
Originally Posted by Douglas.Curtis
Welcome to ICMag!!
What is your goal? Max weight for straight sale, or maximum smoking quality? Straight weight, I'd stick with high heat and work on upping the humidity. Perhaps turn off one of the lights and re-direct this energy toward humidification. Hot and humid makes for great yields.
Maximum smoking quality? I'd dump enough lights, to put in enough a/c for flowering at 70F. I'd also include de-humidification, so I can hit as low as 20% RH. Personally, I like around 25%. This gets me the highest terpene production and retention, and really trichome dense and sticky plants.
Im gonna be more on the production side, although quality is also important obviously. I generally like to run up to week six with high hum/temp and drop the last two weeks..