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not much, better to give them just a little veg if under cfl's, that couple weeks extra growth will pay off later.

Yeah i just pull or stack whatever is under them so they are at the right height, the space is about 3x2x1.5. Sometimes i tie em down a bit too if they get too unruly.

heh, its not as big as it looks... scale is hard to determine in pictures, if i replaced the bulbs with 42 watters my buds would look half their size!

Heh, yeah, here's one that shows the lights, Its ghetto, tinfoil on my walls, lol, but it works (more to keep light out)... with zero light repositioning i just keep adjusting the height of the pot so that the top of the bud is growing between a few lights.

my cfl box gives me 2o every two months.. with 250ish watts, i veg in a tiny.. and i mean tiny.. box.. then into the flower box they go. I aim for 4 plants at a time staggered every two weeks. I have a 1000 watt hps gathering more dust by the day. I fill my needs with cfl's. Its people like...

192 grams wet -- 51 dry so i guess a little shy of 2.

2 ounces per plant is nothing special, depending on how big the plant is, and how many you are growing at once. I can achieve this when growing one or two plants and a good long veg. Lighting varies between 200-300 watts. here's a 2 ouncer.

ya.. like this one :wall:

ceestyle, yeah.. i was thinking of my previous grows and my 1000w hps would give me about a lb, i found the fan leaves didn't weigh more than about a third of that dry, i even never thought of increased root size. so i guess i was averageing around 0.5-0.6 grams per watt... However my light was...

you know i just looked back at what we just started arguing about... seems so long ago now.. i'm sorry ceestyle... you just got me worked up... I hate being told i am wrong... Anyway i apologize entirely if i really offended you... I wasn't trying to be malicious.

ok.. here goes... I used 50 days 12/12 for my light calculation to put on 1 pound final material.. This is the flowering cycle only... you used 4 grams per watt... you say 4000 grams in 50 days of additional weight? Thats like 8.5lbs This is wrong.. no two ways about it. I would love 8.5 lbs...

sorry ceestyle... look.. we're not gonna see eye to eye on this so.. i'm done, all a can say is i personally don't agree with your math here at all on many points... not just your btu conversion. I am frustrated and i don't want this to turn into an argument. I don't care what your...

Dude are you on crack? 53,000 btu /lb your pot must be some kinda new super fuel.. here are some other good fuel sources. A: Alfalfa Pellets = 7729 BTU/lb Aspen Pellets = 8501 BTU/lb Corn - Shell = 8100 BTU/lb Dried Distillers Grain (DDG) = 9400 BTU/lb Hardwood...

say what? who said plants under hid are a dull green? it depends on the color temp and cri of the bulb as well. The pigmentation and refraction values of the surface, and the wavelengths of absorbed and reflected light. This is a little off topic tho. As for thermodynamics each time a energy...

I am sorry ceestyle, i see where you are going but the amount of energy you are describing that is actually used and converted by the plants is not worth calculating compared to the heat given off by the bulb itself. The plant might offset a few watts worth of heat but not a noticeable...

ok done... same heat result, The only things i had for comparison are a 1000 watt space heater and my hps. I put the ballast outside the room and closed the door. (the test room is a bathroom, i brought 5 large house plants in for our plant subjects.) My house thermo is set to 22 degrees. Only...

holy crap guys... someone other than me just try it! If you expend x amount of energy in a room regardless of the source you will need x amount of ventilation because x amount of thermal energy is ultimately made... Yes some of the energy is directly used in the plants growth but not enough...

annnnnddd.. what happens when that light hits something or the plant uses it for photosynthesis? It gets converted ultimately back to heat. Anything electric that expends its energy within a closed system ALWAYS has one hundred percent conversion back to heat.

this is including heat energy produced by the light itself. It should theoretically all be the same.

what last frontier is saying is that a 100 watt hid produces the exact same heat as 100 watt CFL or a 100 watt hid. Doesn't matter what your system as far as total heat produced by that unit is concerned. Cfl's spread the heat over a much larger area than hid but thats about it.