...yeah, a little bit! ... you know, the top leaves are looking a bit pale as well, I think? Fe, Zn and S are potential suspects for defc. when this happens, but it's not distinct enough to make a specific call,...But while you're ordering things, look into Earth Juice Microblast, a superb micronute' supplement!
...uhh Hammerhead, 2-4-10? weird ration, and I know what they say on their website about P-K ratios,... I don't fully agree... but you can try this, or GH KoolBloom 0-10-10, something like that,...