What Do You Consider "tropical" Temperatures?

[pica_nuttalli]

bump! let's get some more data points!

 

[pica_nuttalli]

I crave data points!! Rar!

 

[steelhealr]

I have to agree with CFC. I run my tank at the lower end, 75 degrees. Why? The lower the temp, the lower the fish's metabolism, lower requirements for feeding. Less food equals less waste, less nitrates and better water quality.

CFC makes an excellent point...the kinetic properties of gases. The higher the tank temp, the more that gases will diffuse out of the water. Remember what happens when you open the cap of a bottle of soda...recall the difference between a warm bottle and cold bottle? Cooler water temps allow more dissolvable oxygen. SH

 

[SirMinion]

An interesting observation with Martha about the temperature in her tank.

Martha's species Tetraodon lineatus is very much tropical coming as she does from equatorial north Africa but if we run her tank at 25C or above, she becomes sluggish, dull and disinclined to eat.

By dropping her temperature to 22-23c she eats heartlily every day (given a chance), is far more active and her colours are stronger and brighter.

We believe that this is because although the area she comes from is very very hot indeed- some of it is actually desert, the rivers are very wide and more importantly very deep which keeps the overal temperature much cooler than smaller rivers or standing ponds and lakes.

Martha is actually a deep-water feeding species where the water would be cooler still.

 

[Opcn]

I was one of the folks to answer 82 or more, purely because with my new lights my marine tank shoots up to about 83 after 2 hours, I'm tring to figure out how to add an evaporative cooling fan ATM, and my overflow and air pump provide O2, it is a challenge.