ok so im growing useing hempy buckets, & my nute mix ph is @ 5.8-5.9, & i check it everytime i water (1 time a day), but this morning i decided to check the runoff ph & it was 6.7-6.8. i did this twice to double check w/ same results. i thought that perlite & vermiculite didnt have a ph change. is this normal, anybody else have any info if their hempy buckets ph does the same. should i try to lower my mix ph, so the runoff is @ 5.8. pics attached to show the damage caused by this.
Hey dude, I have tried growing in a perlite/vermiculite/styrofoam mix. I found that vermiculite raises the PH. The runoff always was around 7, despite the water being added having a ph of 5.2ish.... No amount of flushing seemed to help. I have also read somewhere that vermiculite is not PH neutral, and traps nutes etc in its pores.... Google it.