How long do you normally let plants veg before flipping. Is there any certain time or height?
I veg my plants until they are 55 to 60 days from sprouting. Some folks run the photo period plants on 12/12 from seed to harvest.
As you suggest, it is a matter of how much space you have and your growing style.
Depends on height and room you have @Eternal1
That’s a bit like…
How long is a piece of string?
Some grow from seed at 12/12 to grow them as fast and smaller plants, they will still take at least 6 weeks to reach maturity and start to flower.
Personally I usually go 6 to 8 weeks, so they don’t get to tall for the tent, which keeps them at the 3 to 4 foot in height with minimal training.
As others say, space decides. Solid LST kept short can veg 60 days or more.
No training you encounter height issues. I do a LOT of straight up growing. Depending on strain I flip when just past mature. 45 days or so. Stretch can be a pain.
Also can just stay on 12/12 and letem flip themselves.
They will flip when mature just like auto.
I agree with the others, it depends on what you’re trying to accomplish. A full 4x4 grow tent will have the same harvest potential with 1 plant as it does with 4 plants or 16 plants as long as everything else about the grows stay the same. You could spend months vegging out a single plant to fill the space or significantly less with four plants, or even as little as no veg time with a bunch of rooted clones. For some people the cost of seeds will be an impactful part of the grow and they will need to maximize production of a single plant. Others may want the quickest time to harvest and opt to run a bunch of plants to reduce veg time, potentially squeezing an extra harvest per year in. Or you could fall somewhere in between.
I tend to run more plants on shorter veg time because i get bored with grows easily and the shorter a grow is the less money i have invested into the grow. Just my personal preference and a change in my goals could easily warrant a change to my growing style.
Exactly. I filled a 3x3 wall to wall. Heavy training. Looooong veg.
In the end I had 2lb good flowers and couple pounds larf. 600w in that 3x3. A LOT of care and pruning as she grew. Harvest time 7 months or so. A quick flip photo i can flower in a month, flip the second they mature, and harvest 8-12 weeks later.
@dbrn32 is same as me it seems. Get bored, flip early.
I veg for 3 weeks and I do not count the 10 days of seedling status.
I run 3 gallon pots for small size due to physical limitations. I train in a bowl configuration due to the pattern of lights. I support the top colas with K’nex construction kit driven into the soil. I am averaging about 4 oz per plant.
This allows a level energy canopy that gets tops at max but the bowl is only 20% lower due to the hot spot. Still produces down low but not lower than 12 inches from tops I cull those as they start.
Edit
The Knex is kit my son left when he grew up and left childish things behind.
It is easily the funniest part of the grow due to memories it starts.
Ok after smoking it…
interesting bucket set up…How often do you have to empty them,I’ve got those same plant waffles and the plastic saucers keep cracking/failing. @Pothead64
Buckets are for raising and lowering the plant hight. All are sealed and the drain pans just catch seepage from pots.
5 gallons is 13 inches. 2 gallon is 8 inches.
One fan at tent bottom scatters air down low.
That great, looks like more fun than lego! 
I had purchased 4 from a well known cannabis supplier and then 6 more from Amazon.
The Amazon one are subject to light degradation and get brittle very quick.
.I got what a paid for.