15-08-2008, 06:49 PM
posted to rec.ponds.moderated
|
external usenet poster
|
|
First recorded activity by GardenBanter: Jan 2008
Posts: 219
|
|
hyppoxia
What exactly are the O2 readings?
And is the sun hitting the pond at 6.30am in the
morning but not at night?
k :-)
|