Can someone please let me know what the ph reading should be on the run off?
Are you growing in soil or coco? Usually around 6-6.8 depending on what media your using.
I’m using fox farm soil
Mine is reading 5.8
5.8 is fine. I figure anything around 6.0 give or take.
Honestly 6.e to 6.5 is a sweet spot for ffof. I run mine at 6.3 to 6.5 always. Unless i have a super high runoff reading
I like to move my ph up and down as the grow progresses. I think it gives all the micronutrients a better chance at up take. I use the attached chart as my reference. 
have you ever heard of using grass clippings to help with your plants
Nope, how do you use grass clippings?
Man that’s low for soil 6-7 min on soil and I think 5.5-6 hydro/coco not 100% on the hydro waiting for my harvest then trying out a 4 bucket root spa system