After reading the grow Bible and all I can find on the ILGM site/forum I would like to clarify some questions I have…
(personal indoor grow from seed 2 - 3 plants, no tent, fan yes, small led lights all on timer… Also limited budget as I am disabled)
So lumens, is it safe (as a general rule of thumb) if you have the suggested lumens (guide used @bottom) then it doesn’t matter the type of light you are using?
I’ve read much about the florescents, mh, hps, t5 etc… And I mainly need to keep my electric bills down, so I may be stuck with the basic florescent or led.
My other question is determining the transition to the 12/12 schedule… (will likely use 18/6 for seed/veg growth) but do you change to the 12/12 when you start to see flowers or is there an indicator to look for?
(this may not apply to marijuana grows but I’m also doing other indoor plants that research has shown that they need a dormancy period (simulate winter) transitioning the light slowly from 15 hours during summer to 8 hours during winter by deducting 15 minutes a week June thru December and then add 15 minutes per week until June again… The point being to mirror nature lighting as much as possible as the seasons change.) Any thoughts on doing this for MJ?
Current light is 24watt from TaoTronics with red/blue 3 band 630, 660 and 460nm (screws into regular light socket) advertised as a grow light on amazon… Initial research showed lighting suggested to be around 6 inches above (during seed) which I think was starting to burn as leaves were turning white and curling down away from light… So i tried a light meter on my phone (assuming it is accurate) was at like 20,000 lux around the 6 inch height… So i have adjusted height about 2.5 feet above which puts me around 600 - 700 lux.
So again using this logic, will I get at least decent growth and flower production as long as suggested lux is followed?
And then I guess maybe putting some lights on sides when plant gets bigger, is this necessary?
Here is the suggested lux per sq ft (i found posted on ILGM forum in response to similar questions).
Seedlings and Clones = 400 - 1000
Veg = 2000 - 3000
Flower = 5000 - 10000 possibly much more
All help and suggestions are greatly appreciated!