I think wetting the dry Sphagnum is a problem for most of us; especially
as it is usually sold so tightly compacted. As most cp's don't require
pure Sphagnum try making up your various soil 'mix' before wetting it.
The addition of washedsand and\or perlite, which I add in various ratios
for all my cp's, and mixing it\them thoroughly through the broken
Sphagnum should help!
Joe