22-08-2003, 11:03 PM
|
|
|
What's the trick with cabomba?
(Victor M. Martinez) wrote in message ...
Jim Seidman wrote:
The original poster has 30W on a 15g, which sounds like pretty low
light to me. I don't know what kind of lighting is on your
2 watts per gallon is by no means low-light.
"moderate-light" tank, but I suspect that it's much better-lit than
that.
I have cabomba in the 110 gallon tank, which has about 1 gpw of CF light on
it. The darn thing (along with every other plant there) grows like a weed
and requires weekly prunning.
"Watts per gallon" isn't really meaningful when you compare wildly
divergent tank sizes. Yes, 2 wpg is likely more than you need for a
110 gallon. It's less than you need for a 15 gallon (at least to grow
high-light plants). It might be just about right for a 65 gallon.
You'll see a lof of argument about exactly how light needs change with
the size and shape of the aquarium. However, I can tell you
unequivocably that the same wpg number won't provide equivalent
lighting in wildly different aquaria. For example, putting 6 Watts on
a 3 gallon tank may be 2 wpg, but won't grow much.
I'm curious, what variety of cabomba are you growing? I know that, for
example, Cabomba furcáta (a.k.a. Red Cabomba) requires more light than
Cabomba caroliniana (a.k.a. Green Cabomba). In either case, I would
expect the original poster to have trouble with either one given his
lighting.
- Jim
|