I have a bottle of ironite-it is 7-6-6 with some chelated iron. I used it during veg very sparingly.Iron def. are very rare.If you actually have a def. you can use ironite at 1/3 or 1/2 strength to fix your problem. Most likely your PH being off is locking out this and/or other nutrients. Fix your PH first and see how it goes. If you fertilize trying to fix the problem and then adjust your PH you will prob. burn/kill your plants when the nutrients finally do become available the nute levels will be so high. I would say fix your Ph, then post some pics here and see what a more likely def. might might be.
Good luck!