Runoff PH too low?

I just tested my runoff after feeding yesterday with nutes and it came out red meaning 4.0or lower, i always adjust ph 6.0 to 6.8 when i feed nutes or just water and every time i have tested the run off ph its been about the same until now, im growing in a organic potting soil from local garden store, and feeding the foxfarm nutes at about 1/2 strength what can i do to fix this because i dont think the the ph should be that low at all. Also i forgot im in flowering now about a week in

MajorRager said:

I just tested my runoff after feeding yesterday with nutes and it came out red meaning 4.0or lower, i always adjust ph 6.0 to 6.8 when i feed nutes or just water and every time i have tested the run off ph its been about the same until now, im growing in a organic potting soil from local garden store, and feeding the foxfarm nutes at about 1/2 strength what can i do to fix this because i dont think the the ph should be that low at all. Also i forgot im in flowering now about a week in

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Just ph going in. Dont chase ph coming out. Thats silly.

Test what your pouring in make sure it's ph after adding nutes especially if it's tiger bloom that stuff runs at like a 2 your run off should be little lower than what you add in

If the plant is consuming more water than nutrients you will have a low pH from the left over salt next time add lime at the beginning I suggest you get sledgehammer mix it with boomerang and only use your normal amount of water no need to use 3x your pot of water

After the 12/12 stretch the plant takes up the certain nutrients that lowers ph of what's leftover. The same for veg through stretch except ph rises.

Playing the ph swing: Ph 6 is the optimal median for the roots nutrient uptake range (see GH ph chart). Placing the ph slightly acid, or alkaline from ph 6 gives an edge to the plant depending on photo period.

Ph rises in veg, and during the two week 12/12 stretch.

Ph drops starting early mid bloom to finish. This is a result of the type of nutrients the plant takes up.

Veg through 12/12 stretch set ph 5.5 (slightly orange to orange).

Post 12/12 stretch set ph 6.5 (slightly green to green).

Ph 6 (yellow) is the standard simple method.