light ?

[Rose56]

Hi, I have some auto ak 47 in my greenhouse with some cfls 24/7 they are 4 weeks old now. I also have some non AFs that are waiting to flower. If I switch the lights to a 12/12 schedule in another 3 weeks will it affect the AFs potency/yield?

 

[Leviathan]

most people will say yes it will affect the yeild but look up denial and errors page and ask him, he runs his autos 12 12 and says he cant tell the differance in yeild compared to a much longer on period.

 

[S_a_H]

denial and errors page and ask him, .

I am pretty sure he self deleted his account.

S_a_H

 

[blynx]

most people will say yes it will affect the yeild but look up denial and errors page and ask him, he runs his autos 12 12 and says he cant tell the differance in yeild compared to a much longer on period.

Last time I talked to Denial and Error in chat, iirc, he changed his mind on this subject. He did find a difference in yield between 12/12 and running a longer light period. Can't remember exactly how many hours longer, but I'm pretty sure it wasn't 24/0

 

[Barney Fife]

Yeah, Denial has said after a few 12/12 runs, there is a difference. More light is better. (18/6 or 20/4)

He never posted his results, but I saw them. There is a significant increase in yield and overall growth when using more light hours.

However, it was never tested under HIDs, only CFLs. And it was only tested with Masterlow.

 

[habeeb]

sure, the plant is getting alot less light, and your gonna stress them switching the light on them that drastic

 

[vicious bee]

More light is better. But is the Watts per yield better. Not challenging anyone just curious. Running 400 Watt lights 12 as opposed to 18 or 20 adds up. I'm going to run two lights ,400 W CMH, on one ballast. One compartment 12/12 the other 12/12 for the 400W but add two compact fluorescents to run for another 6 hours. Maybe an interesting test would be to add two compact fluorescents to the 12/12 bay to run at the same time as the 400W, but only run them for 6 hours when the 400W was on also. Then the total light would be the same but the light period would be different. The reason I'm contemplating this is light yield per watt. I read that with HID lighting the plant response was less after three hours. Maybe you could run three hours of HID three hours CFL alternating?

 

[Rose56]

Thanks. I'll just have to be patient and let the Afs finish before switching.