Hey, thanks! Out of curiosity, which plants in particular were you talking about when you made your comment about excessive mineralization?
I'm using a RO filter for my water, so if present, the minerals would be coming from the soil. That in itself is concerning - I tested my sand with white vinegar, and no fizz. I also rinsed my peat and sterilized it to boot. Where would it be coming from??
That's unfortunate about the light. I'll see if I can finagle a way to get my pygmies closer to the fluorescents.
I recently upped my photoperiod to 10 hours based on results folks here have had with 10 hour photoperiods and gemmae production. I don't want to chance it with a lower photoperiod based on the way these plants are looking right now.
I will certainly keep you posted on my progress through the winter season. This should be interesting!