actually 5×5. 1000w is a lil too much for 4×4. cant imagine trying to control temps in a 4×4 with guns that big. took me most of the whole 1st grow to truly get it under control.
you can pretty safely defol the shit out of em to week 4 bloom, as long as they healthy and growing fast already. i kinda stalled myself out a bit stripping them down so hard after giving them hot nutes the week before. not really a bad thing tho, with 100% light penetration for a few extra days my flowers are developing nicely all the way down to the screen. plus, im so close to running out of headroom... im using every trick i know to keep them nodes tight and canopy low without stunting or weakening my yield.
im week 4.5 , i have 25 sq ft of canopy that is 16" deep at the moment. i have 10 to 14 days before upward movement about comes to a stop, and i only have 6" of rope left on my light hangers. plus my light is only 16" off the canopy and id be much more comfortable with 20" or MORE, lol. hopefully i can get a few inches back with the 2nd screen.