Fix pH or respect 12/12 lighting cycle?

[Help_Needed]

Hope you caught it in time.

I think I did. As of this morning only a single leaf on a single plant (the biggest) showed any sign of problems. And, although I didn't spend a lot of time in there, the plants still looked ok, so they *should* be alright.

One thing I've learned the hard way about hydro is that nute problems tend to hit hard and very fast, especially compared to soil.

Help_Needed Reviewed by Help_Needed on 08-24-2007. Fix pH or respect 12/12 lighting cycle? My new, expensive, electronic pH meter died last night. After 3 consecutive readings that indicated my reservoir pH was too high, it occurred to me that I might need to recalibrate. When I did, the meter reading started at 7.6 and then slowly climbed to 16 and then the meter quit working. Unfortunately, before I caught on to the fact that there might be a problem, I added a significant amount of pH Down to my res. I suspect that reservoir pH is now way too low - possibly as low as 3.5 - Rating: 5