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600w-HID is not too much for 4x4, I do not see how 600W LED can be too much for that space....
No there is no such thing .Sun light is much powerful than any HID light , and look around ,plants are fine. But HID light when it is extremely...
Small space , big space .... it will stink very badly when plant get to a flowering stage...
Cannabis plant is no different from any other plant .If it is healthy then it is green and new developing leafs are slightly lighter than develop...
Drop the CO and start ventilating your grow area 24/7....
I had a similar idea in the past but never done it.I am sure you will be fine unless you grow in Antarctica ...
I gave up on LED . 1000W LED (BLACK STAR) light is producing more heat than 600W HID in sealed air cooled reflector in exactly the same grow...
just check the Kelvin number and look at the light spectrum chart online to see where that bulb stands (which colors of the spectrum fall under...
I would advice against home made silencers . Get Phresh silencer . They work great , significantly reducing noise by 50%. And home made silencer...
Use two sealed reflectors with no less than 450cfm inline fan for light cooling ( INTAKE PORT(air in)>DUCT>FIRST REFLECTOR>DUCT>SECOND...
You can use CFL during first few days ,or you can use MH right fro the start (this is what I do). Distance between your seedling and light depends...
During the veg period plant mostly using blue spectrum for development , so more blue- faster (better )development .MH emit more blue spectrum...
I have to disagree. DWC is much easier than soil if you have a meter (but dose require more money to run).Fixing a problem take only seconds.
Yes , you will be fine. If your Fan would be 200cfm and filter would be rated for 150 cfm then you would have a problem .
I believe they called full spectrum CFL .Check your local hardware store for EcoSmart bulbs , they are full spectrum.
Use MH during veg period lights 18 hours on and 6 hours off (3-4weeks), use HPS during flowering period - lights 12 hours on and 12 hours off (on...
Oh and if you thinking LED,forget about it . 1000W led panel (600W actual power draw) will heat up 3x3x6 tent much higher than 600W aircooled HID...
If room is small then you will experience high humidity and high temperature in that room . You can leave the windows slightly open and better yet...
I am not sure about "super nova" but 600W average hid grow bulb will have a good coverage up to 4x4. Read the sticky on the top of the "light...
Interesting .