Planted Tank Obsessed
Join Date: Jan 2015
Location: Newmarket, Ontario, Canada
Maybe you have figured it out.
If you increase surface agitation, then more O2 exchange with the air, and the O2 concentrations rise in the tank (so pearling would be seen).
Plus the decrease in temp would allow a higher O2 concentration.
Both together could explain why release of O2 by the plants now is not so visible, but is happening nevertheless (as witnessed by continued growth).
Last edited by imcmaster; 03-20-2015 at 06:35 PM.
Reason: more surface agitation = higher O2 in water??