Thanks everyone. A water test revealed a lot of sodium. I suspect that's the culprit. I've switched to local river water with better results.
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