has anyone used the Flora Series

I've been using the Flora Series not sure if I'm supposed to use all 3 at the same time or do I do it in stages. I've only been using the floramicro and floragro up till now the plants are about a little over a month and one is starting to get fading in the leaves and some yellow dried spots and 2 leaves dried up and crumbled it was fine until the last flush and that when it started happening was the next day. I just read the bottle and it says to combine them so I wanted to double check before I did. This is my first time growing so I have no idea what I'm doing

i use all 3 at the same time, just make sure u mix it in the proper order, and keep an eye out on your ppm

Yes, you are supposed to use all three. I use the Flora series too. I use all three up until flowering, then I stop using grow. I make up for the N by adding more micro in the beginning then slowly decreasing at the end. You must add micro to the water first, then add grow and bloom.