I'm with you 100%, "they grow trees indoors in 5 gallon hempy buckets", that's my point exactly. They have the experience and the equipment to do it, they aren't new to hempys and understand how hydro works. A 3.5 gallon hempy will grow a 4' plant nicely. He's asking if he should get a silver or blue bucket so he's not a pro, he's never grown hempy style, with that I'm assuming he doesn't have the equipment needed to grow anything over what a 3.5 gallon bucket will do. Will a 5 gallon bucket work, of course it will, is it needed for the average person growing 4-5 plants in a 4x4 tent, no. If you think a 3.5 gallon hempy is used for a sog grow well that's just silly, most hempy sogs iv seen are either 2 ltr soda bottles or 1 gallon. So I guess I may have made a mistake by assuming he wasn't set up to grow trees so il ask, hey pain guy what is your lighting and room set up? Do you have growing experience? Hydro experience? PH/ppm pens? Maybe Ur right and his intentions are to grow trees and he has several 1000 watt rigs and 10' ceilings so for that I apologize