Lower soil ph when?

Grow Cycle
1

Can you lower soil ph at any time? Im at 7.3 ph week 1 of flowering but i wanna get to 6.3 or at least the 6.0-7.0 range. I bought DaKine 420 soil ph down

2

Yes.

The ideal range for a soil grow is 6.3 to 6.8.

I would use a product intended for cannabis. The product you reference also contains big doses of nitrogen and phosphorous. The nitrogen and phosphorous can burn your plant if too much is used. You want to modify pH and nothing else.

I use these.

pH Down
pH Down616×789 38.6 KB

pH Up
pH Up422×614 35.5 KB

3

Welcome , are you using a good Digital ph meter to do your check ? :v::+1:

4

Yes, you lower your medium PH by watering or feeding at a lower PH. Optimum soil PH is 6.5. Is that 7.3 from a run off sample or slurry test?

5

Yes bluelab soil ph pen

6

From using bluelab soil ph pen

7

Ty but i use ph down for only water ph but can it be used for soil ph also? If so, how may i apply it?

8

Your soil PH adapts to what you put into it. Are mixing nutrients then adjusting PH?

9

This is with coco but also applies to soil. I was a couple weeks into flower and the coco’s pH was higher than I wanted or should be. I flushed with 11 gallons of 5.7 - 5.8 pH’d water. I suspected calcium had built up and was causing the high pH (calcium is alkaline). It took several days of pumping 3-4 gallons a day. After each flush I had to feed since I really had no idea what was there to feed the plant. The work paid off. It’s pH is now 5.8 and has some room to increase during the remainder of its flower stage.