so the flourish liquid is the micros.. and the dry ferts that I bought are the macros.
You got it! That sticky on the dosing regime is definately worth a read. Just remember that it is estimative, so you might have to adjust the amounts to fit YOUR needs.
I tend to dose equal amounts of potassium nitrate and potassium sulfate because my plants chew through them like there is no tomorrow. With the amount of light your running, I would imagine this might be the case for you. It will atleast give you a good starting point with regards to amounts though.
On another note, how long is your photo period? Reason I ask is because it looks like the sun is sitting about 3 inches from the waterline with that fixture you got