@Mañ'O'Green hey it’s me again. Bet you regret accepting me now that I’m like an aphid, always showing up and hard to get rid of.
I’m having a pretty major issue and it may cost me half my seeds. I knew I needed either new PH up or new ppm and ph meters, after having a ph that continues to return to 6.8 against loads of ph up. So to be safe i got new PH up and down, and new meters.
Here’s the problem. The new meters come with Buffer Solution for calibration (for ph only ppm don’t seem to need or have an ability to calibrate). Well I discovered that my old ph meter was the most likely issue as it was nearly 2.2 points off! Trashed that one and using my newly calibrated one. Problem now lies with tds meters!!! Old one (seemingly trusty) is reading 200 some parts above my brand new one. What the fuck is going on here I can’t be this careful to have such a discrepancy. Recommendations?