I recommended the Cyco brand. It's extremely potent stuff you only need tiny drops I made sure to warn of that. The beauty is even if your mixing 100+ gallons a week a quart will last you a year lmao.
after talking to my friend. you are right....its soooo strong that you wont need enough to really alter your food that much. my friend seems to think that the extra P in the cyco is what was causing his problems....i doubt it personally. (Just for the record though: Cyco ph down is 50% pure P)
Im not
against ph'ing soil. I just dont recommend going down that road until needed. All good soils are coco and/or peat based and the ones that are peat based usually add lime , then you add all the good organic amendments and your ph will
usually stabilize itself between 6.0 and 7 very quickly.
(reason being: coco and peat are almost the perfect PH for our world and they are both buffers so no matter what you put in (within reason), the soil will stabilize between 6 and 7)
Example: my tap is around 8 right now. I use it with no ph down. I just add whatever food i think they need.
Another great example: If using the Earthjuice 3 part "organic" line, then after mixing your food , the ph will be close to 4.0. Ive never seen problems giving them a ph of "4.0" from the meter. (that reading is not accurate on any meter)
Those are my own opinions and some facts. If you want to rule out ph completely , like most growers do, then you will go ahead and keep ph'ing your water as long as you use mostly chelated chems for food. (Real , organic foods will never read right with a ph "meter")