Hey man I just read your whole journal so far, looks like you're just starting to get some people to follow! Well count me in, I am subscribed.
First off, let me say I can be long winded.
Second, I think you are doing excellent man! Your plants look lush, healthy, and pretty much just awesome! I don't see any signs of a pH problem myself. What is the soil pH at?
A couple of comments. I really think 45 days of flower is UNREALISTIC. You will need more time than that my friend, to have the results you want. I am like 100% sure. No offense!
Second, can you get some pH UP from a head shop? If you can, they should also have a pH test kit. It comes with a little plastic container and a dropper bottle of testing solution. You can then mix up your nutes and test the pH. Then, you can use the pH UP to correct it to 6.3 - 6.8, as Fox Farm suggests. I use their COMPLETE line, from soil on up myself!
Do you feed with nutes each watering, or every other? Well get back to me. Awesome job and rep +