@WhiteWidow,they have high ratios of NPK if you use their soil indoor you will end with nut burns , i had like 3 grows fucked up because of them when i sarted this 4:20 Journey :)
@Rabbit25, ok so far i only tried klasmann steckmedium and 0 problems. i suggested biobizz because i saw its similar structure to klasmann, sorry. if u tried it and had problems then its no good for you :D good luck