I too agree with the fact of a
lower amount of dissolved oxygen in my tanks with this higher temp. This I found out the hard way
when I first began to ship fish and at the time did not know the proper techniques for shipping.
I find it even worse in my fry tanks, those at which I keep at 83-86 to speed their
metabolism and try to in turn speed growth. I have compensated the oxygen with providing almost
double the normal amount that an average hobbyist might use, by adding extra water circulation with
power heads and a larger air supply. IE. a 55GL tank I support with 100G air pump.
per aggression, most of my tanks are set for 1 colony of fish that are breeding, on average 4-6
females with 2 males. The second male helps my poor females from being chased too often by the
dominant male wanting to spawn more frequently then the female may wish to.
temp on water being a possible cause of a shorter life span is not something I have herd of before.
I will definitely do more research on this, for I would rather have a few less fry and a longer
life for my sweets
For my fry room I am currently upgrading my system to 1 blower unit.
I have only just recently started to do the plumbing for this