Yeah that was strange. Maybe it was due to some rapid growth, or heck if I know.. RO water is nice. cheaphydroponics.com sells filters now. You just need a faucet adapter (can get one anywhere, same as a waterbed hose adapter)

At the moment, I've PH Up'd to 5.8 and it's stable for now. It took a few ml to get there. My PPM is at 1400, which is the highest by far it's ever been. Maybe I've been underfeeding them. I have been very light on nutes for fear of doing harm.

These are the reasons I started with the freebie seeds and not the "good" ones.

We'll see how it goes.