Autoflowering Lighting Question

Hello all - After several mechanical issues I'm back trying a new, small project for a client. Same Hydro set-up, 400w air cooled lamp, fogger, drip to hydroton. Feminized Lowryder Diesel autoflower.

Here's the situation: After close to 3 weeks at 20 hr./on 4/off lighting the girls just seemed to be getting taller, so I switched the lights to 12/12 hoping to 'force' flowering and limit height. (the grow box is only 3 feet tall)

It's been 7 days since the switch and I see no sign of flowering as yet. My question is perhaps when I should have asked BEFORE switching light cycles...

Will the change in light cycle make a difference as these are autoflowering beans? Would it be bad for the plants to change it back to 20 on/ 4 off?

Perhaps these are silly questions. My first 2 projects went very well, then I had multiple issues with the next 3 or 4. Mostly mechanical problems I was not prepared well enough for. (no spares) I'd like to be able to produce for my client. Fortunately she has other resources, but she is a friend and I'd love to get this done right for her.

Any help greatly appreciated.

Thanks, mrmcr2

Whats up?

12/12 is not the best for autos. At about 3 weeks is when my autos just barely started to show if I remember right.

Switch them back to 20/4 and give them more time. If they dont show signs after maybe 4 weeks or a tad more then they might need a 12/12.

I had two autos that apparently were mixed up at the breeder and they are some type of reg plant and after 5 or so weeks vegging while the rest of my autos finished I got to put them under 12/12.

Also not sure if you knew but the diesel ryders can get a bit taller than most autos so they might outgrow the 3ft tall grow box. They also dont start flowering until 3-4 weeks according to the strain description on the attitude... Be patient.

Also be on the look out for nanners on those plants now. Autos seem to be easily stressed and with the switching of the light schedules you might get a few.

Goodluck!
:jointsmile:

Thanks for the input. I guess I'll switch them back to the 20/4 they started with and be a bit more patient. Hoping they don't get TOO tall - I've got trellis netting up to try directing some off to the side - but with the constraint of the grow box...

Any real problems with this project and I think I'll toss the box and switch to a grow tent with more room.

Thanks again, will update ASAP -

mrmcr2 :thumbsup: