So the snippet from a ILGM article says the ideal ph for hydroponics is 5.5 - 5.8.
“When growing hydroponically, the ideal pH is around 5.5 to 5.8. However, 5.3 to 6.5 is good, and 5.0 to 7.0 is acceptable. If you start to see numbers under 4.5 or higher than 8.0 you will begin to have nutrient absorption problems. If the pH reaches 3.5 or 9.0, there’s likely permanent damage to your roots.”
Is this what all you hydro guy go by?
Seems like there could be a Cal-Mag issue. No?
Please excuse my ignorance.