What is the best pH for hydro for MJ during flowering?? On the internet you can find charts showing nutrient absorption through the pH range. But theyâ??re all freaking different! And directly conflicting.
See below:

1) A chart from www.overgrow.com (guess they should know about pH for MJâ?¦)

2) A more commonly seen chart, taken from an orchid-growing website (this chart is the same as one thatâ??s sold in grow shops around here)

3) From an avocado growing website

4) From the book Indoor Marijuana Horticulture ( I think by Jorge Cervantes)

5) From a site that does NFT, in New Zealand

Following the charts from Overgrow and from the book, the biggest P absorption would happen way low â?? around 5.3 would be optimal. According to other charts, the P absorption doesnâ??t even start to happen until 6.0 minimum â?? 6.2 or 6.3 even better. I am confused.
Iâ??m tempted to set it at 6.3. I donâ??t think that anyoneâ??s actually scientifically determined this for MJ using the methods they do for other plants. So who knows; take a wild guess I guess.

Was wondering what pH other people have used that gave the most resin production and smell?
grow4fun Reviewed by grow4fun on . which pH chart is right? What is the best pH for hydro for MJ during flowering?? On the internet you can find charts showing nutrient absorption through the pH range. But theyâ??re all freaking different! And directly conflicting. See below: 1) A chart from www.overgrow.com (guess they should know about pH for MJâ?¦) 2) A more commonly seen chart, taken from an orchid-growing website (this chart is the same as one thatâ??s sold in grow shops around here) 3) From an avocado growing website 4) From the Rating: 5