water temp to hot for corys?? - Tropical Fish Keeping - Aquarium fish care and resources

 
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post #1 of 4 Old 07-22-2012, 11:03 AM Thread Starter
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water temp to hot for corys??

I have a new 10 gallon tank I am still cycling and the water temp has been hovering at 79-80 degrees - just at room temp without the heater. I assume the light is warming the water a bit.

I would like to eventually keep pygmy corys or other small corys and from the fish profiles I have read, 80 is too warm for them. I am sure when the season cool off, I can keep it lower but will it harm them if the temp is warm?
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post #2 of 4 Old 07-22-2012, 01:26 PM
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Long-term this is too warm for the "dwarf" species and many of the others too. But summer heat increases are something we have to live with, and I have these (up to around 80F now with my A/C) for short spells and the fish seem to manage. The dwarf species are best at 75F which is where my tank with these little fellows is normally kept.

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Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #3 of 4 Old 07-22-2012, 02:53 PM Thread Starter
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thanks. I know if I get any corys in the next month or so, my water will be this warm unless we have a really cooling spell. Our house temp is never over 76-77. Don't know how to cool off my water this summer.
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post #4 of 4 Old 07-22-2012, 04:02 PM
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Originally Posted by grannyfish View Post
thanks. I know if I get any corys in the next month or so, my water will be this warm unless we have a really cooling spell. Our house temp is never over 76-77. Don't know how to cool off my water this summer.
Keep the tank lights off (if you have live plants, you might be able to reduce the light period, plants can maange with 5-6 hours daily, and this could be during the cooler morning so lights could be off in the mid to late afternoon); keeping the tank open (cover) unless you have fish that might jump--and many will; feeding less (food digestion increases fish's need for oxygen and increased physiology); ensuring good water movement (air stones, filter flow) and at the surface (to increase oxygen as well as maintaining lower heat). Some suggest a fan blowing across the tank surface.

Years ago I livedin a condo and during heat waves lasting a couple weeks it would be around 90F during the days, so of course the tanks were in the high 80's. I never lost any fish. I now am in a house with the fish tanks all in one room, and I have a portable air conditioner than will keep the room at 80F during warm days.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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