I got these https://www.amazon.com/dp/B00XQECROY/ref=psdc_3752891_t1_B0742MQS33
I hear you should use pH adjusted water. I have distilled water that is already 6.1pH and i could easily adjust slightly with some CNS17 Grow for a weak solution. No idea how much CNS17 it would take to drop it to 5.6pH but probably not much. I might have some other household acids available but no pH DOWN atm.
6.1pH with some CNS17 sound good enough or is it more critical when using rockwool?
I hear you should use pH adjusted water. I have distilled water that is already 6.1pH and i could easily adjust slightly with some CNS17 Grow for a weak solution. No idea how much CNS17 it would take to drop it to 5.6pH but probably not much. I might have some other household acids available but no pH DOWN atm.
6.1pH with some CNS17 sound good enough or is it more critical when using rockwool?