Both cold and warm water. To be honest I'm sure I was a few lbs over weight to begin with. For reference, I'm 5'11" and 195 lbs. In cold water with my 8/7/6 I was diving 18 lbs with my steel 80 tank. Had to scull down the 1st 10 ft to begin the dive but would drop pretty quick as the suit compressed. Was neutral at the end of the dive with little to no air in the BCD at or below 15ft. If I drifted up to 10ft during the safety stop let's just say the safety stop was pretty much over. For warm water I was diving 12 lbs and probably could have dropped to 10. With the Hydros in cold water I am using 12 lbs. 3x3 in the trim pockets and 2x2 in the integrated weight pockets with a 2 pound tank weight. For warm water with the harness, I have 2x2 in the trim pockets and use a one pound tank weight. I was a little foot heavy with the Hydros especially with my cold water fins as the tank sits lower in the BCD than my old Dimension. Moving the tank up higher in the BCD and adding the tank weight leveled me out perfectly.