Your Lighting Question
Good morning x...
You can grow most aquatic plants if you have 2 watts of light per gallon of tank size. I use 6500 K, T8s in my tanks. You want bulbs that are closest to natural daylight, that's 5500 K and the 65s are recommended for growing most aquatic plants.
The Crypts and mosses I have do very well with a little less than 1 watt of light per gallon. Not familiar with the Spirialis plant, but if you have it with the other two, then likely it will do well under similar lighting conditions.
Lighting in general, is really pretty simple unless you get into the more demanding plants.
I also dose a couple of different kinds of liquid ferts. I've found over the years, the low to moderate light plants do best if I fertilize several times a week.
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