I use all seachem products in my planted aquarium. I found a lot of info from the Seachem website.
There is a dosing chart available.
It is a good jumping off point. I used it as a guideline and then made adjustments based on the health of the plants. I made an xls worksheet to convert the dosing values for my bow front tank.
There is also a chart that describes plant health
I also invested in a testing kit. Let me know if this is helpful.