i hear what your saying and this is why i don't get into discussions on boards everyone has their own opions and choices. i know what experiences we've had with growers in soil using something like advanced nutrients PH down, general hydro ph down VS growers using citric acid crystals.
I grow mainly organic, but the "Earth Juice Cyrstals" thing is misleading. Acid is Acid and no mater how you package it, organic or not, the end results are the same.
I think most gardeners need to have a better under standing of what an acid or alkaline substance is. Here is a short excerpt from Wikipedia on acid as we are concerned with it:
" An Arrhenius acid is a substance that, when added to water, increases the concentration of H+ ions in the water.[2][3] Note that chemists often write H+(aq) and refer to thehydrogen ion when describing acid-base reactions but the free hydrogen nucleus, a proton, does not exist alone in water, it exists as the hydronium ion, H3O+. Thus, an Arrhenius acid can also be described as a substance that increases the concentration of hydronium ions when added to water. Examples include molecular substances such as HCl and acetic acid."
I use whatever i have available, lemon juice, standard ph down some left over GH PH Down ( refuse to buy any GH products since their take over by Monsanto ).
And what is in GH brand PH Down??
food grade Phosphoric acid.......... EJ ph down is nothing more than a gimmick IMO.