On 11/14/2010 07:44 AM, suemfrancis wrote:
> I increased the light from 6 hours a day to 8 hours to no avail.
> There does seem to be a slight 'cotton wool' matter around some.
>
> I do have a guppy and 2 shrimps but I dont think that the degree the plants are going is down to them.
>
> The tank has a Sunglo 46cm 15W T8 lamp.
>
Plants vary greatly in their requirements for light, water parameters,
etc.. Perhaps the best place to learn about plants is:
http://www.tropica.com/plants.aspx
My guess is that you need more light - at least 30W and maybe 45W
depending on the plants. You also need it on for 10-12 hours a day.
When you install the brighter light you'll have to increase the duration
gradually to minimize the chances of an algae explosion. A good way to
do that is to have the lights come on and off during the day with the
elapsed time being about 12 hours but with several 1-2 hour dark
periods. That works for me. As the plants grow gradually decrease the
dark times.
There are lots of options for lighting. None of them are cheap. I
think the GLO fixtures are good value for the money. That's what I use.
<http://www.petsolutions.com/storefront/fish/aquarium-supplies/lighting-power/fixtures/glo-t5-ho-lighting/prodGLOT5HOLighting.html>
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