Has anyone got any ideas?

Yeah, I think that's the problem too.
Could well be - I feed mine at half the recommendation on the packet on the assumption that the manufacturer is trying to make money out of me so is specifying the Max, rather than the norm. I've always been happy with my crops of Toms, Cues & PeppersAddictedtopalms26 wrote:I reckon I could've been after feeding it too.. been giving it tomato feed twice a week...