Hi All,
For what it's worth,
I keep and breed "ALL" my six colour varieties of angel's and my Altum's at "ROOM TEMPERATURE".
The Thermostats in the tanks may be set to 26 degrees, but the fish room temperature can, and does reach 30.9 degrees which overrides the thermostats in the tanks.
I have no trouble at all breeding any of my Angel's as any Nelsonian can tell you. :roll: :roll:
If it works for you then it isn't broken so don't start trying to fix it. :oops:
Good luck