They are big pieces, two huge pieces to be exact.
Root balls.
Gonna have to keep an eye on it mind, it's sweet chestnut.
I know horse chestnut is poisonous, sweet chestnuts are edible and the leaves are used in tanks.
I jetwashed and steam cleaned it.
I'm mainly gonna be watching the pH, gone very yellow already even after adding then doing a 80% WC. Will be doing another 80% tomorrow.