cant keep my ph down, NEED HELP!

Well. everyone was being so nice on this thread Not.
Anywho, I will start at the original post - nobody picked up our man mentioned "baking soda" for ph down? That would be wrong - that would take ph up. Up is alkaline. I can't be the only one who has used baking sida to neutrilize battery acid on top of a car battery....or am I just that old? Moving on....

I am not sure why people knock vinegar, it has a lot of good qualities:
Add no minerals - unlike commercial ph downs which are generally just phosphoric acid. I use phosphoric acid when I want to go down and the phosphorus level is low. But other than that, ph down products just add to the EC level. IMO.
Vinegar is cheap.
Vinegar-water of any particular ph can lower ph the same as identical ph'd phosphor based products like phD. That's just chemistry.
Lemon juice - ditto. Although LJ adds a lot of sugar which is hidden by the ascorbic acid(vitamin C) that is doing the ph down work. More basic chemistry.
Millions of women douche with vinegar water - apparently it is good for girls.

ph down appears to be nothing more than watered down muratic acid - Home Depot sells it by the quart for $2.60. One capful will drop water that is at 7.7 to about 6.0. What a deal. But watch out for the phosphorus overloading....vinegar or jemon juice don't introduce THAT issue.

I knew what he meant about baking soda and pH, it was a typo I believe...

it was a typo, my bad. but yea im still haveing the problem, wondering if its the nutrients? nothing seems to keep it down for over an hour or so. and i have changed my water and used less nutrients every time.

still nothing

temperature can change the PH as well if i remember right. i think its the problem im having with my aero cloner. i drop my PH to 5.0 put it in a warm closet under warm lights in a black bucket and the water heats up a bunch and my PH shoots way up. thats my guess but im not 100 percent sure on that.