I need help....
I hope it is ok to ask in your thread Jim, because most readers are using waterfarms
I have a seed that germinated in a plug. Within the next day or two, i'd like to get it in the waterfarm. For the past 5 days, I have been running water, a weak solution and some dri9p clear in my waterfarms. No plants, just the set up, hydroton and all. For the first few days, I monitored and adjusted PH daily, but noticed it kept going back to 7.5 or even 8 in the reservoir. I'm using a PH down acid made for aquariums, plants and fish. It is powerful stuff. 1 tbsp will take 2 gal of 7.5 water to near 6. I would set ph to 5.8 and I monitored ppms.
Today, I decided to flush the system and change out the reservoir, in prep for the new seedling. I emptied all the water, added water and Drip Clean and kept running water through until it was crystal clear. The PPM reading coming out was same as fresh water going in. I then ran straight water for an hour and emptied again. This time the water came out crystal clear, not muddy red looking from the clay like before. (yes, I rinsed the hell out of the hydroton first) I added 2 gallons of water. I brought PH down to 5.8. Fifteen minutes later, still 5.8.
At this time, one of my BRAND NEW flourescent T8 fixtures in nursery burns out and has an eletrical smell. Just bought the damn light yesterday. I take it back, swap it out and out of curiosity, decide to take a PH reading. I wish I hadn't. In less than ONE hour, my waterfarm water went from 5.8 to nearly 8 PH!!!! Why the hell would this happen? Is having a plant with actual roots in the hydroton going to help prevent this? I can't keep adjusting the water every hour, it wouldn't be worth it money wise. Hydroton has been rinsed, soaked, rinsed and rinsed again.
Any ideas? I want to get this plug going but not with PH swings like this. Is there a stabilizer I can add? Am I missing something? I've got a Milwaukee meter, it is accurate and was just calibrated recently and re-tested.