Plants benefit most from red and blue lighting. Fish have a hard time seeing in the red spectrum, so you could put a small red incandescent bulb on your tank and not wake the fish up at all, while being able to view the tank. I'm not sure what you're aiming to do, though.
Why not just alter your photoperiod to be on while you're able to view them? If you're home in the evening and night, have them turn on at 5pm and go off at 4am. As long as there isn't direct sunlight lighting the tank all day, you should be fine.
As for your question, I don't think they make specifically red fluorescent tubes. My Gro Lux tubes are definitely reddish, but wouldn't suffice as a night light since they are still wide spectrum bulbs.
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- Sam P -
plantedtanker in limbo - all tanks currently in storage
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