with adequate air flow you should be able to have the ligh between 25-40 cm from your plant.. place a fan blowing on the area between your light and the top of your plant... have it at a slght angle so that it is blowing upward....

every 30cm the light looses half of its effefective lumens/growing power... this is why it I so important to keep the light close to the tops of your plants... using a 1000 watt hps bulb, every plant within 25cm inches will/should produce a main cola of 20-30 grams...

I have repeated this over and over yet few take this advice... even though I posted pictures of a cfl grow with a 15 gram cola...

iloveyou..

FANs.. many many fans.. are key..

iloveyou
Garden Knowm Reviewed by Garden Knowm on . some advice needed just wodnering aabout how much water should actually be in the tank. id say the bucket thing im using is 80-100 litres in total. ive been filling it with 15-20 litres (which is bout 1/4-1/3 of total) and seems to be ok but some advice would be much appreciated. i noticed yesterday that i have quite a few baby spiders and a few other assorted bugs living on the plant also, is ther a safe way of removing bugs n stuff from a plant? also how far should the light be from the top of the plant? Rating: 5