?? for you advanced nutrient growers

hey guys, a new personal grower here and started using AN products. I understand their nutrient calc on their website and about ppm. It tells you how many mls per week of each product to achieve desired ppm. I water my plants more than once a week, so am i adding this amount of nutrient each time i water that week? Or just one of the times i water..(feed once a week). Also, I have their ph Down solution, as my soil ph is hanging around 7.5. How do i use this? Can I add it in the nutrient solution to lower the ph, or do i have to do it with straight water?....how low should i lower it? Thanks, I appreciate all your help...

What media are you growing in? I'm assuming you are growing in rock wool, not soil. You mix up your nutes first then add the pH down to get it down to between 6 and 6.5. You should use RO water or filtered, not tap. You'll need to mix up the nutes to feed them everytime you water them; it's part of it. Make sure to keep an eye on your pH levels; that can really mess things up if it gets off. Make sure to sign up for Big Mikes Tips on their website.

if the medium is soil, feed once a week

wow you run your ph at 6.5?
I use SensiBloom at 5.8, once it goes beyond 6.1 I start to see slow growth.
What's the recommended ph for AN stuff anyway?

5.8-6.0 for hydro and 6.3-6.5 for soil

I use An in soil and keep the ph around 5.5-6.0. It has worked very well. Also what I do is water with just enough fresh ph'd water to last 3-4 days. then water with the nutes but only enough that they will need water in 3-4 days again. then plain water again. You want to try to have a fresh water and a nutes cyclt every week. Thats what I do atleast. Good luck!