The pH perfect thing is just advertising, I've been using their products for years, and they have always been buffered to mix at ph 5.9ish, which is great if you are making a mix to feed into a soil like medium, but if you are using tap water in a recycling res, expect your pH to rise a bit after a few hours as many cities buffer the drinking water to pH 7+ish, so you'll still need pH down. AN pH down is shockingly more potent than the orange stuff, and even a tiny splatter will give you a chemical burn so wear gloves.
Have you even used the pH Perfect stuff?
Yes, most nutrients are buffered to hit a specific pH. That's not new, and that's not what pH Perfect does that's so cool. If you mix the pH Perfect nutes with RO water you hit right at 5.6-5.7 pH. Then the cool part is that IT STAYS THERE.
I've been growing with for awhile now. Do I own a pH meter? Sure. Do I use a pH meter? Yeah, some. Is there any reason for me to? No, not except my own paranoia. I have NEVER taken a reading on the pH Perfect nutes that wasn't exactly where it ought to be. I've seen it drift around a little, but it stays right around the mid-high 5's. I still have my ppm meter. I check the ppm of each batch after I mix it to make sure I didn't forget anything or mistakenly add something twice (did that once, and always double-check it now). I usually check ppm every few days to see how they're eating.
But so far I have never had to adjust a single damn thing while growing with their new pH Perfect nutes. All my checking with meters is just because I've got it so ingrained in my head I start getting edgy if I haven't checked it but since I never get a reading that is bad and thus never have to do anything it doesn't really matter if I check at all. I'd be doing just as well if I never checked anything, not counting frayed nerves.
I'm starting to relax and gain some confidence now... I went 4 days without checking before the last time.
Ya'll can scoff and look down your noses all you like because someone wants an easier way to grow but here's the thing: I'm not telling anyone they gotta grow the way I do. I like knowing that it's basically impossible to screw up these nutrients. It's one less thing that can go wrong and ruin the entire grow. If you're not happy unless you're personally tweaking every single possible thing with your grows, hey, more power to ya. Different strokes and all that.
But there's nothing wrong with the way I grow, either, and since I'm not attacking anyone for growing differently than me I don't think it's too much to ask that no one attack me because I look for different things in a nutrient than they do. There's enough growing to go around without getting all butthurt over who uses what style.
EDIT: don't act like posting pictures proves anything, either. All that proves is the ability to post pictures. Anyone can do that. Pictures don't prove anything. People are making pictures every day that are clearly fictional. Neil Patrick Harris on a unicorn... pictures don't mean squat, and they certainly don't prove someone can grow.