How close can i put the plants to each other.

Hey ive got a lot of plants of different sizes and strains, in my grow room most on the floor, smaller ones on a table. in both places they are all touching, I have some fans going to help move air, and both are under t5 light fixtures. just wondering If I should give them each some breathing room? I've got a few pictures, just not sure how to get them here, thanks.

Pretty close as long as there is room for light to penetrate and you can keep all of the canopies level. This is assuming inside of course since you are using t5 light. If you look up sea of green, you can hardly distinguish one plant from another.

yup can keep them close as long as you can keep you rh and temp good if not you will be battling PM

Ok thanks for that info. now another thing, how much trimming can be done, on say the lower branch's without giving the plant to much trama?

Yes I keep the ph around 6.0 and the temp is about 70 degrees, this is in my basement, I've got a 8 light t5 fixture over the ones on the floor, and a 6 light t5 fixture on the smaller ones on the table.

Not sure on the trimming of the bottom. I think you can (and probably should with floor) do some lollipoping, since thenpenetration is not as good as hid. I shoot for 6.5 pH using soil bit its not critical if you have good soil.

I plan to do more trimming on my next run to make harvesting easier and focus on top buds. They say you should do it twice, the last trim would be 2weels into flower. Look up lollipoping