At which stage of flowering can i do away with blue light?

My 3 autos were under a dual 200watt cfl with the intention of adding a further red 200watt cfl once flowering started. However my 200watt dual cfl crapped out so i dont plan on putting another one in , instead i put in 12 x 20watt cfl`s as a starter, the plants have stretched a little due to the time without sufficient light whilst i was preparing the cfl`s. However my question is am i ok to use red light at the first sign of flowering ie: only a few pistils showing as i have 1 plant that is covering quite well with pistils , 1 plant with only about 6-8 pistils and another 1 with only 2 or 3 pistils , or do i need to get some more blue light in there for a bit more veg? Only prob is the only blue light i have unless i order from the net is 2 shitty dual led panels.

Any guidance appreciated

Yea, you'd be fine with just the 2700k.. Lots of people use hps the whole grow, so you should be fine

actually. if you can you should alternate between the 2700k (red light) and the 6500k (blue light) like every wk (1 wk red, 1wk blue, 1 wk red, 1 wk blue) and so on. this way your buds will turn out top notch. the blue light aids in resin/thc production. your buds will be extra frosty by alternating between red and blue light. i did it a lot with great success.

So to sum it up i dont need the blue light but it may give better results if i do?

Ive heard a mixed spectrum of lights is better than having all red or all blue,, Id make 10-15 of the cfls 2700k and keep the other 5 as 6500k

oh excuse me. i didnt notice ur using cfls. i thought you were talking about an hps light and a mh light. lol. if you're using cfls use 1 blue bulb for every 3 red ones. thats what im told is a good ratio but alternatively you could go 50/50.

its really preference. 2700 or 6500 (red or blue) can be used independently for a whole grow cycle and both will yield good results. right now im in veg with 5 23w cfls. 4 blue and 1 red. for flowering i intend to do the exact opposite. maybe 2 blue instead of 1 though. im only growing 1 plant in a 1 gal grow bag.

i personally would advise against using mh the whole way through...buds wont be as dense. but using both the whole way through is definitely a plus whenever possible in my experience.

themanwiththeplan said:

oh excuse me. i didnt notice ur using cfls. i thought you were talking about an hps light and a mh light. lol. if you're using cfls use 1 blue bulb for every 3 red ones. thats what im told is a good ratio but alternatively you could go 50/50.

its really preference. 2700 or 6500 (red or blue) can be used independently for a whole grow cycle and both will yield good results. right now im in veg with 5 23w cfls. 4 blue and 1 red. for flowering i intend to do the exact opposite. maybe 2 blue instead of 1 though. im only growing 1 plant in a 1 gal grow bag.

i personally would advise against using mh the whole way through...buds wont be as dense. but using both the whole way through is definitely a plus whenever possible in my experience.

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2nd on this, u dont NEED either of the two, one or the other will work all the way through, however for best results its best to mix them up, i hear if possible best to do a 3/1 split.