cories and sand - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 09-09-2011, 03:00 PM Thread Starter
cories and sand

i know cories prefer sand, but is smooth gravel actually bad for them?

i don't have any yet, and probably won't for 6 months to a year, but i want to make sure i have everything i need for when i get them. if i have to change substrate for them, i'd like to know in advance so i can better plan my tanks/changes i'm going to be doing.
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post #2 of 3 Old 09-09-2011, 03:47 PM
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you don't have to put them on sand,however it does have benefits,it can help stop their
barbels from wearing away,although on small smooth gravel they'll be ok,
they are fun to watch on sand while they sift through it ,as it pours out the sides
of their on sand it's a win win situation,but gravel is fine.

when you set up a new tank,hide an extra
sponge or two behind some decor,that way you have
something seeded for you next filter.
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post #3 of 3 Old 09-10-2011, 11:25 AM
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Agree. Sand is preferred, but smooth small grain gravel works; I used it for 20 years. I now have sand and prefer it, all my corys are in sand substrate tanks now. Either works. Just make sure it is not sharp-edged.

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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