Pearling is when the water becomes reasonably saturated with oxygen and the
plants will release visible oxygen bubbles from their leaves or roots. It
occurs in moderately/heavily planted tanks after the lighting has been on
for a few hours at over 2w/g or thereabouts.

"Micky" wrote in message
...


3) How long should it take before I notice a difference in the plants?


The change can be nearly instant, as far as pearling goes. But you may
not
notice much of a change, with that level of CO2.

Could someonw please explain what pearling is ? I hear it talked about
but have
never had an explination.

Thanks

Mick