the d.o.c Posted February 4, 2002 Share Posted February 4, 2002 light intensity virtually doubles every 6 inches closer a HID is to the canopy of bud light adheres to the "inverse square rule" ,i.e it diminishes to the square of the distance ,which can mean you may be losing a lot of your lights potential , always make sure your lights are at the right height to provide maximum lumens but not too close incase of heat and not to far away because it will be less efficient here is a rough rule of thumb for lights hang 1000w and 600w HID's 24-36 inches from canopy hang 400w HID's 18-24 inches from canopy and smaller HID's to 6-12 inches away peace 8 Link to comment Share on other sites More sharing options...
Dr.Green.Jnr Posted February 12, 2002 Share Posted February 12, 2002 nice, tip. just to add to it; the best practical lighting combination for flowering is generally considered to be a 2:1 ratio of hps:mh. the mh helps make he buds moe dense and solid than with solely hps lighting. Link to comment Share on other sites More sharing options...
Orinoco_Womble Posted March 2, 2002 Share Posted March 2, 2002 I place an oscillating fan pointed towards each of my lamps(2 lamps 2 fans and this cools the lamp and shade considerably allowing me to get even lower to my plants without burn..............Orinoco Link to comment Share on other sites More sharing options...
TOKEITALL Posted March 2, 2002 Share Posted March 2, 2002 PUTTING FANS IN THERE TO COOL THE LIGHTS IS GOOD BUT LOWERING THE LIGHTS WILL ALSO CUTT LIGHT SPREAD TO THE REST OF THE SUROUNDING AREA AS WELL TAKE THIS INN MIND IF YOU HAVE A FEW PLANTS IN THE ROOM TOKEIT 1 Link to comment Share on other sites More sharing options...
Arnold Layne Posted March 3, 2002 Share Posted March 3, 2002 Yes D.o.c., absolutely correct. Also it helps to rotate the plants under the light, both on their own axis and around the growing area. This way every plant gets equal quantities of light throughout its Flowering period. It is unreal how many grows are "stationary", with plants huddled around the edges and struggling. With rotation I am happy at 35 watts per sq.ft, well below the suggested 50! I have not noticed any yield deficit however. Use that light!!! :mad: Link to comment Share on other sites More sharing options...
the d.o.c Posted March 5, 2002 Author Share Posted March 5, 2002 any objections to me pinning this subject :peace: :thumbs: Link to comment Share on other sites More sharing options...
DJ Xelous Posted July 30, 2002 Share Posted July 30, 2002 B) I've heard that it's better to use fluorescent rather than incandescent because of it's light giving properties(plants grow better with fluorescent). Is it true? and if so, what about halogen? Where does it fall? Link to comment Share on other sites More sharing options...
Mono Posted July 30, 2002 Share Posted July 30, 2002 Halogen falls down the pan....absolutely useless for plant growing purposes....... Flouros okay for small plants in veg and rooting cuttings..... HPS/MH you need for growiung anything really worth smoking..... Mono....x Link to comment Share on other sites More sharing options...
Fred Flint Stoned Posted August 15, 2002 Share Posted August 15, 2002 Yes, halogen do not have the right light spectrum for growing. A friend of mine places a piece of wood along the length of both walls and then a piece of wood accross the growing area - this is where he places his lights. This means that during the day he just slides the piece of wood along the wall #(the two pieces of wood along the wall act as rails) and it acts as a cheap light mover..I will be doing this and will make a thread of it - after checking that it has not already been done. Link to comment Share on other sites More sharing options...
Altidude Posted June 13, 2003 Share Posted June 13, 2003 So how does the MH / HPS thing work... Do you use MH for vegging and HPS for flowering? A combo? Thanks! Link to comment Share on other sites More sharing options...
strider Posted June 14, 2003 Share Posted June 14, 2003 I've gone vertical. Got addicted to the "Vertical Limits" forum at CW. Then latched on to krusty in the hydro forum before his treatment of trolls made him unwelcome. (Site is down at present.) Trouble is, Ddocs systems are for commercial growers not scared of high plant numbers, and krustys' freedom buckets need a noisy compressor and 10 Kw of lighting. A bit too rich for me, I'm just a personal guy. I've removed the reflector, (400w HPS) and suspended the bulb from the ceiling. Now the plants form a circle around it. Room for maybe 12, but I was cloning for the old space and have only 7. They're growing better, temps are lower, and some fan leaves at the back are bolt upright catching light. Looks cute. Up to now, (3 weeks of flower,) they've set their own limits of how close they should get to the bulb. Looks like a large green bowl. I'm not the most attentive of gowers, and it'll take a few crops to sort a new easy-grow regime for them, but looks good so far. Link to comment Share on other sites More sharing options...
rudeboy Posted June 16, 2003 Share Posted June 16, 2003 can anyone help me out here...my m8 seems to think that using an energy efficiency light bulb(as used by rizlaman and cuban pete-both have sexy plants on the go ) aren't very good, i however, would like to purchase some as they seem to have worked before for others and they seem very cheap for a first timer with only a couple of plants. cheers Link to comment Share on other sites More sharing options...
NPK Posted June 16, 2003 Share Posted June 16, 2003 (edited) Sod your mate rudeboy You've seen the results that are possible with compact flouros. give it a go and when you harvest your first bud don't let him smoke none. (only kidding) Even if you only get a small amount of airbud on the first attempt it's better than no bud at all. Once you've got a couple of grows under your belt you could either up the lighting or learn about and try scrog (SCreen Of Green) growing to increase your yeild. Go for it m8 npk Edited June 16, 2003 by NPK Link to comment Share on other sites More sharing options...
Jammin Posted June 16, 2003 Share Posted June 16, 2003 strider id love to see some photos of that man, dont think theres any verticle grow pics here yet...? Link to comment Share on other sites More sharing options...
rudeboy Posted June 16, 2003 Share Posted June 16, 2003 Sod your mate rudeboy You've seen the results that are possible with compact flouros. give it a go and when you harvest your first bud don't let him smoke none. (only kidding) Even if you only get a small amount of airbud on the first attempt it's better than no bud at all. Once you've got a couple of grows under your belt you could either up the lighting or learn about and try scrog (SCreen Of Green) growing to increase your yeild. Go for it m8 npk sweet m8, my m8 isnt too happy wiv ur post, altho im more convinced an he now reckosn we'll get less green! honestly some people ey hehe well im tryin it an im growin teh stuff round my place so he cant really do much about it!!! at the moment its on the window cil anyways, best shoot, got a philosophy exam 2mrw morning an im dreading it cheers 1 Link to comment Share on other sites More sharing options...
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