My ssd is a small clone but the bubba is about 2 feet tall. I have it going for 18/6 hours and give it just a little of miracle gro all purpose liquid plant food 12-4-6 every other watering. I just want to know if you have experience how much you think i can yeild out of these and the bulbs are soft white warm light 2700k will the veg. Phase keep growing at this?
That Bubba is ready for 12/12. 2supra4u is right; you should tie that bubba down or use a screen to train it cuz its going to stretch hard for the first 2 weeks or so of 12/12 Depending on the strain they can double in size during 12/12.
As for the light: Veg really doesn't need a ton of light. I would say 1 of your 68 watt bulbs(6500k) per plant and she will grow just fine. At least 18 hours on, but 24 hour light won't hurt either just give you a little faster growth.
For flower: Flowering light is where are you should put the most of your money if your on a budget. Think of it in simple terms. More Light = More Bud so i would say at least 4 of those 68 watt bulbs(2700K) otherwise its not even be worth it. If you don't have at
LEAST 100 watts per plant your wasting your time. I would recommend 150+ watts per plant if you want a decent yield.
As for as estimates on yield: Its really hard to say because there are so many factors: Lighting, stress, stress training(topping), non stress training( ties, Scrog) plant genetis. With all these factors one 2 foot plant can yield anywhere from 1-5 ounces.
What I would say is use this first grow as a base starting point. Figure how much each plant yielded you and then look at ways to increase it next grow through using or improving any of those factors i stated before. You will only get better with time!
Good luck and keep growing!