What type of soil are you using?
Fox Farm Ocean
Ocean forest should provide you with nutrients for about 4-6 weeks
Do you have a ph meter and a tds/ppm meter?
You will need one if you don’t already own one.
Your will have to start checking your ppm at about week 4 and after once your ppm drops under 1000/ppm you will need to feed.
I need one… I’m gonna grab one this weekend.
Just don’t buy the cheap Amazon ones for $15-$20
I recommend aspera 20
Aspera 60
Or a blue lab ph meter which is the one I own and I absolutely love the meter easy to use and very easy to calibrate and gives you a notification when it’s time to calibrate.
Good to know, I was about hit “buy now” on the ones you just warned about .lol…you saved me.
Yes don’t do it lol
Take it from experience 
You can but a regular tds meter those work fine.
I used FFOF & FFHF.
The FFOF is very “hot”, your not going to be feeding for a while. Don’t be alarmed by some signs of excessive Nitrogen… I worried about that for over a month. I will use FFHF moving forward as it’s not as hot.
You won’t need a ppm meter for at least a month, but you need a ph meter ASAP. No water should hit your soil until you ph it to 6.5.
I have an Apera ph60. Love it.
***When you do check your run-off ppm, don’t feed until it is below 700 or 800 ppm.
**** what do you plan on feeding them?
You are good for 4 to 6 weeks before you need to start feeding in brand new FFOF.
Some of my strains love brand new FFOF and others hate it.
I do make sure to check the PH… I really have a lot to learn I see… I plan on giving it the FF diet.
I use the FF trio plus Cal-Mag.
Keep in mind, with FF, half doses are like full doses and 1/4 doses are like half doses.
Start small and add more if needed.
Yes Ive read that. I have another plant, my first attempt at a scrog… I give it the FF diet and have never done more than a half dose every other watering… she looks healthy.
i see alot have the Cal Mag… Should I use that with the trio?
Yes. I use Cal-Mag with every watering, with or without nutes.
good to know… ill be getting some then… thanks man
Looking good!