🚀 go-pugleaf

On Mon, 21 Dec 1998 10:40:53 GMT, rev_grover@my-dejanews.com wrote:

>Maybe someone can help me?  I'm trying to grow aquatic and semi-aquatic
>plants in aquariums.  In the aquarium hobby there is debate going on as to
>type artificial light that is best.  One idea is that plants only use light
>in two frequencies, one at the red end of the visible spectrum and the other
>in the blue end of the visible spectrum.  A second idea idea is that plants
>need all frequencies of light.	A third idea says that plants simply need
>extremely bright light for the stomata to open. Also a friend of mine claims
>that plants don't need a period of darkness,  that they will do just fine
>with light 24 hrs a day. This doesn't make sense to me but he has more
>experience in botany than me so I don't argue.
>
>If anyone could give me some insight I would greatly appreciate it.
>

Plants don't sleep like we do so light should not be a harm to them.
They do go through a rhythm where they make sugars in the daytime and
use them at night.  A plant that has continual light will just grow
all the time and store sugars.  Blooming and growth cycles are
controlled by how much daylight a plant gets, so you do need to know
what effect you want and how to get it.  Ever go by a greenhouse at
night and see it all lit up.  Yup, it can be done, if you know what to
do.

Gleason

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