That to me looks like a Potassium deficiency mainly, but you could also do with some N and P imo. I agree with Si on the TPN+ 
I use Profito, but i also dose extra K alongside. As a Trace it's a good fert IMO, but doesn't contain N and P. It does have some K in it but not a lot IMO. You could always try the Easylife Nitro and Phosfo. I use these and find them excellent. This is one reason why i don't use anything else.

I use Profito, but i also dose extra K alongside. As a Trace it's a good fert IMO, but doesn't contain N and P. It does have some K in it but not a lot IMO. You could always try the Easylife Nitro and Phosfo. I use these and find them excellent. This is one reason why i don't use anything else.