Right, but these are floating plants that ought to be helpless in the current of my filters. But somehow, they do manage to find themselves basking under the lamps. I can scoot the lamps across the lid and within a day, there they are, as if they "grow oars or outboards" and buck the system to get into place. I wonder if they can sense the current the way they can sense a place to root...
Okay, so I'm one of my spooky magic plants. I'm happy under my light. Then the fishkeeper scoots the light away from me. Well, if I'm adapted enough, my cells will grow more slowly on the well-lighted side and faster on the darker side, bending me toward the light. Good. That's textbook. But what if the swirling tides of current also provide some sort of -tactile?- contribution and the leaves are able to catch a ride into the light by not only growing toward the light, but also dipping into the current in strategic locations?
