Bill Stock wrote:
"Nikki Casali" wrote in message
...

Bill Stock wrote:

My office tank has been running a little hot lately (82-84+) . The room
temp hovers around 28°C at the moment, so the SAEs are near their max
temp?

I think SAE are fine at 28°C (even 30°C+), as long as O2 content is
sufficient. Saying that, my tank with 5 SAE are surviving extremely low
oxygen levels during the night, less than 4ppm O2. I can see their gills
moving more rapidly, but they are fine. I've had no casualties when I've
even had 2ppm O2 for short periods.


What are you measuring O2 levels with Nikki? I've always been curious, but I
thought these toys were rather expensive.

It's one of Hanna's that gives a digital read-out. Expensive, possibly,
as far as toys go. But numbers give me comfort. It has been extremely
useful in understanding many situations. Running a CO2 injected tank
with no surface turbulence whatsoever gives me cause for concern,
especially with the recent heat. Also, with an ongoing issue with an
angel fish that has been breathing rapidly for the last two weeks, one
thing I can do is exclude the possibility of lack of oxygen.

Nikki