cool white flowering

Is it possible to begin flowering with cool white (6500k) lights? Not for the duration, rather to start out until I can get some 2700K lights in a couple weeks. Thanks for the input.

yea i think you could m8 coz 'cool white' is just refering to what colour spectrum it is biased to.....(about 6400k) it iwll still emit some red light.. just not as much..... can you not buy like 3 20 watt CFLS ?? there about £1 a piece and would help in tht time space

They are reacting to the 12/12 schedule for the first few weeks and are not growing tons of bud *yet*...so you should be AOK.

good luck

btdt

newbutpersistent said:

Is it possible to begin flowering with cool white (6500k) lights? Not for the duration, rather to start out until I can get some 2700K lights in a couple weeks. Thanks for the input.

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Yes you can use a 6,500k cool white light to initiate flowering as it still outputs some red light in it's spectrum. However, you will get a slower flowering response than 2,700k spectrum lights due to the reduced quantities of red spectrum light from the 6,500k as red light is the predominant colour spectrum that the plant uses to monitor daylength via pigments called Pr and Pfr found in the plants leaf chloroplasts.

thanks everyone for the info, especially for babygro for getting at the actually science of why the "red" spectrum is better for flowering. Once i have a few more bucks in the grow budget (this week or next) I will be light proofing my new grow room and starting flowering. Although I have been toying with the idea of taking clones and flowering them. Thanks again for the responses.