I grow seedlings out indoors under CFLS for transplant outdoors and I usually leave it on 24 hrs.
I guess aquatic plants are different, and I know it would stress the fish, but terrestrial plants really don't need a dark cycle to grow vegetatively. (dark is required for most fruits and flowers though) I use that though- keeps my lettuce from going to flower, and can eat lettuce year-round that grows in my kitchen. :)
Back on topic: somehow I was thinking of co2 from yeast AS being natural and not high tech. I would consider MH lights and CO2 cannisters, regulators, and diffusers as high tech. It's just me.
So if I leave the lights the way they are, and just plant the tank properly, will the red coloring show up on the plants? I know that only happens when the light is bright...
Oh and stephanie- that apon was beautiful. I hope I can get something from it.
Well I don't know about co2 injections as I only use Flourish Excel and only in one tank. But the "high tech" part of co2 injection is the other stuff that you have to compensate when you start raising other levels. I just don't get into that realm. I just don't see the need. But seeing as you're the prolific gardener you might feel otherwise.
Side note: my uncle has tomato plants that happen to be under a light on his building that never goes off at night. Those tomato plants are out of control! He gets SO many tomatoes (so I guess the opposite as far as the non-flowering effect). Anyway, who needs hydroponic gardening when you have porch lights?