When I put together my 9 plant set, I filled water tank the full 135 ounces. After about 3 weeks, when only a few sprouts were visible, I pushed down on the water level indicator and it bobbed right back up.
A week or two later, the indicator seemed a bit lower so I poured in more water, thinking it should need more water by now.
However, now, about 5 weeks into the start of my plant set (basil, red chard, mini tomatoes), the indicator seems still to be at the top and what looks like some type of tan/brownish growth, maybe mold?, is on top of all the pods.
Have I overwatered? If so, what should I do and is it really obvious when the tank needs refilling? Should I let it get to the indicator lying on the bottom before refilling? Would that be an inch down or ??
Thanks in advance.