Damn that yield is great.. You knocked it out of the park... I can't wait to see you push it to the limit and really see how far you can get em goin... pH wise, as long as my tap isn't disgusting(really depends on where in the city I am, its ridiculous seen up near 500 ppm before) then I like to add back 1/4 total volume tap to my RO, mix in my nutes ten pH to 5.8... I think the swing from 5.8 up to 6.2 throughout the week/rez change really works much better for me than a stable 5.8-5.9 range I get with straight RO... Much faster more vibrant growth plus cheaper in cost of actual water.. I'll try just at 6.0-6.2 next run see where that gets me