Re: Lee's Next Project
Posted: Tue Sep 05, 2017 10:45 pm
For the PH, I've tried changing each switch with a fresh one and I have the same issues. I'm leaving the switches out of the tank for now and want to see how we track for a few days. There is some evidence that the ph probe may have started dying, but it's not enough data as if it did, it looks like the ph was dropping from 7.89 on Wednesday afternoon when we got home, never came up as it would during it's normal cycle during the day. It dropped to 7.22 by Thursday morning, and only reached a peak of 7.6 on Thursday off from a usual ~8.4 at the top of the cycle. The other odd thing is that while we were away, ph usually goes up when no one is home expelling CO2. While the PH rose initially when we left, by the time we got home it seems like it had dropped a few points during the week. Anyway, I've hacked the calibration to give me a good number. Let's see how it behaves without the switches in. If it continues to drop, I'll get a new one.