I made some before and the mess it makes is incredible. Carbon is expensive even in bulk so now i just buy the filters as it is not much dearer.
Around 300E for the big filter, lasts 2 years. smaller filters dont last as long in the higher humidity
ah need to be well rooted first and then they can take abuse. Rooting now under 600W dual spec 150cm away.
Once well rooted 1m. MH is being fazed out dual spec better results.
Lovely pics slipper. more......
Seeds are expensive and then they send you a load of free crap that you dont need.
Buy feminized and one is all you need.