If you got yours from Ryan I think we get about 30 bags out of it , so about 5Lts mate , be careful which stuff you use , as said Rigby has had problems , I personally have not with WicksHow's much to a full blue water butt ?
This very helpful Keith thank youIf you got yours from Ryan I think we get about 30 bags out of it , so about 5Lts mate , be careful which stuff you use , as said Rigby has had problems , I personally have not with Wicks