Hydrogen sulfide can develop under the UG plates with is not something
plants roots can handle.

That would be my best guest.

Da'fishboy

"Ben" wrote in message
...
wrote:

Wright's still around. I doubt you'll find much support for algae.
Less algae is better for plant tanks. UG filters are not what folks
want for the plants either.

Regards,
Tom Barr

Besides plants roots getting tangled in the UGF, why are UGFs negative
for plant growth?

Thanks,
Ben