I cant find specifics on how much area 1 COB would cover. I'm designing a 4'x8'. Based on several of growmaus comments I'm under the impression that 1 COB every 10-12 inches should be best. So I was going to purchase 27 cxb3590s. I'd have 3 rails of 9 COBS starting 12 inches from the back wall & 10" from the left wall. However if 6 cobs properly cover 4'x4' then I'm going to purchase way too many COBs. Does anyone have articles or threads measuring how much area a COB can cover? How much penetration does a COB have?
