Safe water temperatures and unsafe temperatures

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MEDHBSI

Plecostomus
MFK Member
Sep 4, 2011
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Coquitlam BC
So with this super hot summer and my big tank being in the garage I'm nauseous saying my tank is sitting at 85!!!! should i get a chiller? is that super high for stingrays and an arowana?

-I usually run my tank at 82
-its been 2 weeks and nobody seems stressed about it
-eating fine
 
So with this super hot summer and my big tank being in the garage I'm nauseous saying my tank is sitting at 85!!!! should i get a chiller? is that super high for stingrays and an arowana?

-I usually run my tank at 82
-its been 2 weeks and nobody seems stressed about it
-eating fine

85 is consider on the low side here in South East Asia :)
Many keep their rays and aro in outdoor pond.. and temperature of 35 deg C (95F) is not uncommon.
 
Just one more note.. you can consider to add more aeration to increase the oxygen level.
Oxygen level drops when temperature rises.
 
You might try a fan blowing on the tank, or across the water surface depending on how it's setup.
 
That temp is nothing to worry about mate. Fish are quite tolerant of seemingly high or low temps, it's a sudden drop or rise that does more damage
 
I am curious on what you consider a sudden rise or drop in temperature. I have 4 rays and I am in canada which this summer has been 18c in the morning and almost 30c during the day is that to much? I control my Temp as best as I can with my drip my digital temp guage will go from 80f to 86f in 10 hour time period
 
Personal opinion is that's not a sudden rise or drop, far from it. 10 hour on a slow increase.
Rays, fish in general, caught in natural ponds such as oxbow lakes etc in the South American dry season have to endure big swings in temp as they are in 'small' bodies of water. But those temp swings are gradual, even if the start point and end point temps are far from one another.
What I meant by a sudden drop or increase, usually a drop I'd say, is caused during a water change. Many people top up after draining water out, with the garden hose and it doesn't take long at all for the aquarium to lose several degrees. A friend of mine did this once and forgot to turn the hose off for some reason (tank had an overflow) but he almost lost several prized clown loach of considerable size.
 
Freshwater lakes river and streams are notorious for thermoclines. Extreme and radical temperature variations at different levels in the body of water. Just go swimming and feel the difference for yourself. When water conditions are stable the temp swing isn't harmful. But when water conditions are marginal already then a wide temp swing will push a fish over the brink. Temperature variatation and fish stress/death are possible signs of other issues within the system.
 
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