I've gone for the B&Q multipurpose soluble plant food this grow - used to be a Biobizz man but funny smells and lack of best before dates have left me feeling a bit underinformed about it all

Have been using it in my garden with fanbloodytastic results so figured it's gotta be worth a shot - my petunias are so smothered in flower I think they're having trouble photosynthesising ::

So yea... anyone used this? good results or no?