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Better question dell.... If I were to use HID it would need to be a combo light. What wattage of light would your recommend to replace 300 - 500 watts of cfl. It would have to be cooled enough too. My grow box is 3.33 (Wide) x 2 (deep) x 3.5 (tall) in feet.

I am currently on a budget. I am 18 and have years to upgrade my setup. CFLs will create a lot less heat too with my particular set up. I know the results are not as good but I have been doing research and I believe they will be satisfactory for my needs.

According to this table http://www.weedfarmer.com/cannabis/tables_guide.php you likely have an npk & mg deficiency. Have you been giving them any nutrients.

Well nedyah isn't my real name but its pretty close. Well I am an 18 year old student of the histories. I am quite savvy at hands on production of chemicals or plants. I have been reading for years about growing weed and now I and think its getting down to it. In the next few months I plan...

Well I know The Peace Sign in Winnipeg makes its own custom glass. If you were down for the challenge I read Nitric Acid can be used for glass etching :P

How big is your box?

I believe they the 42 watt bulbs do heat up more. I read a thread a few days ago of a guy growing a few c99 plants in 3 tote bins stacked on top of each other. He said that his 6 bulbs heated the box quite a bit. Somebody who has a good thermostat, a smaller grow box and CFLs should turn...

Thanks for the great advice everyone. I am really looking forward to trying this out. This site obviously has a great community, with friendly members. Also the simplicity of a cfl grow is a little shocking to tell you the truth.

I have been reading about using cfl's in the 6500k range for veg and the 2700 range for flowering. What I was wondering was can you use a combination of these different cfl's from the start and not change them when you change to 12/12. If so what combinations have worked best for people? I...

Recently I have been interested in this thread: https://www.rollitup.org/do-yourself/51417-diy-4oz-minimum-yield-grow.html I have decided I would like to try this in the upcoming months and was really just wondering if anyone could offer some insight onto a good, short strain to use? I...

I am quite interested in this! More info?