ive been told not to adjust my ph using hydro chemicals as it will kill microlife, how can I change the ph of my water using something that wont kill stuff .
ph up?
ph down?
Mmm... ok, first, there are some things you should know. First, if you're really running a good organic soil, you'll only need to really monitor pH rather than adjust it, because between the plants' ability to make adjustments within the rhizosphere and the microbes' ability to do the same thing, they'll get it handled.
But, let's say you want to adjust pH anyway, just to prevent problems. While I haven't scoped the typical pH adjusters most often used, I know from my years of aquatic experience that a chemical pH adjuster will not kill microbial life simply because it's a chemical. It needs to occur in high enough concentrations. However, if your goal is to keep it 100% organic, then you want to use appropriate adjusters and products.
Make sense?
Now, the other side of the pH adjustment equation has to do with the source water. If that water is very alkaline (not a basic pH, but resistant to pH
shift) then you'll end up dumping so much lemon juice or vinegar in the water trying to push pH down that it will end up being lemonade or vinegar-ade. You don't want that. If that's where you end up, then you need to filter the water or work with the pH as it is.
If all you're worried about is water for flushing (yet another debate/discussion on that concept) then don't fuck around with pH.