tinytoon, I have a GB Instruments GMT-319 multi-meter; but I am not sure how to use it to measure EC/PPM (if I even can measure electrical conductivity in my water with it). Advice?

Well, it's been half a day with the new "hard water" nute solution, and I see no reside building! Hope! But I'm afraid the plants are so far gone that I'll have to start fresh to really test this.

Is EC/PPM a big enough factor given my situation so that I ought to get a read of it before re-starting?

Thanks!
cannashaman Reviewed by cannashaman on . White residue - hard water? Hello, folks. I've enjoyed being a fly on the wall in this lovely place. I appreciate your vibe! I'm about to buzzz attention to myself though. :) I'm getting started in a new place, and I'm having trouble diagnosing my problem. I'm using a GH WaterFarm with GH nutes (strength: between that for seedlings and the general, mild solution). I topped off the 13 gallons I started with by adding 5 gallons of clear water I ran through a hiking filter (no nutes in the top-off). I've got four Rating: 5