Hello all, newbie here 
Ive been doing some research into which compost etc is best for them, people have been saying john innes no2 has the best results and i was just wondering do i need to add any perlite or anything else to it and would this compost need to be changed when entering the flowering stage?
Cheers guys
Ash

Ive been doing some research into which compost etc is best for them, people have been saying john innes no2 has the best results and i was just wondering do i need to add any perlite or anything else to it and would this compost need to be changed when entering the flowering stage?
Cheers guys
Ash