It's from Geolia, ph5.5-6.5. It says it has guano 200g/m³, and 1kg/m³ of N14 P16 K18 fertelizer and 7.0kg/m³ of limestone. 60-75% water absortion.It composed mostly of peat it seems. Its really fluffy, It seems good quality, how do i know? Its light mix right? Will it burn my sed