I dont really measure the runoff but I always input at 6.35-6.5. I struggled alot with her during veg, but honestly I think I was starving her. With the ffof I didmt know when to start feeding and I think the soil was leeched and rinsed barron by the end of the first month. Then I only started doing 1/2 doses till flowering. Now that Ive been doing that everything new is growing in much greener. I actually just checked her out and the pot was pretty light compared to this morning so I gave her a lil bit more. About .5gal full dose.