markfm:
The 2,5kg is "uncompressable" material of the suit and it was already removed from calculation at the surface.
Wetsuit saturation with water comes from the displacement of air in your suit. Depending how tight is the suit, and the characteristics of the inner fabrics of it, it varies a lot depending on your suit. The weight of the wetsuit after the dive has nothing to do with it. It's just water and neutral in water. Staying vertically in water a few minutes before the dive replaces most of the air with water, and the rest maybe 1/2 to 1 lbs worth don't mean so much. Of course when diving in the deepest of the wetsuit/weights/BC configuration it may be significant.
Someones here still keep writing about "necessary" overweighting bcs of the safety stop. I would say it' s only a safety stop and it can be done between 10' to 20'. So when one know's his/her configuration the safety stop can be done when "underweighted" at end of the dive. At 15' it's still few lbs negative!
The biggest difference comes from your wetsuit. What I have been writing here is the dangers with "heavy" wetsuit. With "tropical" wetsuit you defineatly need a bit extra weight to do the safety stop but not 6lbs.
