Got a few plans i wana check over if any of you guys can help me that'd be great, So far my plan consist of a grow in a rectangle spare room. The room will be split in two by a curtain made of white, light proof, sheeting. So there will be two grow rooms running at once, so that as plants come off veg an go into flower more can be placed into veg. Veg room = 1/3rd of total space Flower room = 2/3rd of total space Veg room = 1 x 600w hps on 24 hour Flower room = 2 x 600w hps on 12/12 Am i right in thinking that as plants grow larger and pass into the other room this much extra light will still be good for the plant as the ratio of light to grow space is still the same as the floor space in each room are doubled as are the lights. the plants will just be spaced out more. or should i just pack them in and have the same # of lights for both rooms? flower space: Will be 8x8ft = 64sq.ft having 27 plants that = 64 divided by 27 = 2.37sq. ft each, which is not a problem as plants can grow as tall and large as they like. ive noticed everyone seems to be very keep on twist tying techniques all claiming more yeild. But as height is not a problem i was just goin to grow them as tall as possible, cutting each back so they have one main stem and one large cola, and experiment by having a few plants say 5, with more leads branching off, which maybe is a good idea for all 27 plants as i have more than 1.5 sq, which is the space im told is suited to a 1 stem plant so the leaves a blocking the lower ones cos there iant any cont theyre cut off to put more focus on grwth of the top, is that right??? Lumens per square foot: 1x 600w = 90,000 lumens so 2x 600w = 180,000 lumens 180,000 divided by 64sq.ft = 2815 lumens which im happy with Im planning on growing 15 northern lights (indoor) and 12 super skunk, which are indoor/greenhouse plants i think... will this make a difference at all? there are other factors of course but i would like to sort these queries out as ive been wondering about them for a while, any feedback / criticism would be very much appreciated, Thanks in advance.