WPG for "very high light" plants?

"Elaine T" wrote in message
m...
Bill Stock wrote:
wrote in message
oups.com...

Bill Stock wrote:

The Tropica site lists certain plants as "very high light"

requirements.

Anyone care to hazard a guess how this translates to WPG? I'm

assuming

somewhere close to 6 WPG?

I've yet to see a plant I cannot grow well at 2-3w a gallon.
All aquatic plants are for the most part, low light plants.

Yuo are welcomed to suggest a plant that cannot be grown at 2 w/gal,
I've grown close to 250-300species of aquatic plants over the years.
I've yet to meet one that does not do well at 2 watt gal.

I will say this: more light is not better.
More light= faster growth = faster uptake =more pruning and more chance
of algae.

Regards,
Tom Barr



It's my Water Hyacinth again. It was doing OK for a while, but it's
slowly going brown and mushy now.

Water hyacinth is a bit different than submerged plants. High light for
water hyacinth (Eichhornia crassipes) means the equivalent of outdoor full
sun. I have water hyacinth growing well in a pond where it gets about 8
hours of direct, strong Southern California sun. It's not growing as well
or as quickly in my other outdoor tank where it only gets 6 hours.

Is your water hyacinth sitting right under your light fixture where it can
get direct light all day?

Yes, they even got sunburnt once, when I filled the tank a bit too full.

They were doing poorly before, but I cranked the light up to 16 hours a day
and they started to prosper. Then they started to go mushy again, so I
raised their temp to 77 and they perked up again. The leaves are bright
green, but the bulbs are going soft and mushy. I can always tell when they
are doing well, they get the long white roots.

I think my lights are losing some of their brightness, although this is not
supposed to be a factor with CF bulbs. I don't know if it's the fertilzer
(too much iron) or something completely different. They actually seemed to
do better before I added the CO2, although I suspect this is a coincidence.
I've also got a minor case of string Algae, perhaps it's using something
they need?

Any ideas?



--
Elaine T __
http://eethomp.com/fish.html '__
rec.aquaria.* FAQ http://faq.thekrib.com