yes to the ppm pen and my nutes are the flora series
When growing pot keep in mind everything and all advice is just guidlines. It took me a long time to realize this.
So Here is what I am at with my 4 week flowering stage you can compare and change things as you see fit.
ppm 600
ph 5.8 I let it drift up too 6.3 b4 bringing it back down
temps are the biggest variable you will have I try to keep mine under 85. I try but sometimes unavoidable
On my nutes I would use your flora bloom and if you have flora micro I would use it as well. I would add the micro to a rate of 250ppm then top off with the bloom up too 600. If they dont like it then back it down. But I woulnd't go over 600.
Change your water every 10 days
Note: ppl will bash the 600ppm at this stage of flowering with statements like quote: you should be running 1400ppm by now or at least over 1000.
I call bullshit on that. even if you can get away with it its just a waist of money and only causes problems with your plants.
By keeping your ppm lower you will never have nute lockup and for someone learning that is a very big advantage.