i also added soem of that KENT marine Essential Elemnts for my live rock
You don't need to be adding to the system right now. Especially since your cycle is now finishing up. Your salt mix will contain everything that is needed for now.
I kinda find it hard to believe that your nitrates are zero if both your nitrites and ammonia are zero as well. I wonder if you have a faulty kit or it just can't read low levels of nitrate.
If your cycle is indeed done, you need to make a large water change to rid the system of all the excess nutrients. That will curtail some algae problems.
Like e-cat said, you are probably now seeing diatoms. Turbos and Top shells love that stuff. I thought you already had a cleanup crew???