04-25-2009, 08:55 AM
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Originally Posted by yippee
I just bought two albino cories tonight. I know they should be kept in bigger groups than that. I'm trying to keep from spiking the ammonia again. In about a week or long enough to make sure my levels stay stable i will add more. I'm hoping the 20 will be done cycling by then and i can add them to it. They are currently in an over filtered 10 gallon. The smaller one is pretty calm, the other is constantly on the move, and fairly quickly. He tends to race around the tank, around the glass. Which one is acting normal? The tank has been lived in and constant tabs kept on the params so it shouldn't be that. I'm hoping it is just him adjusting to the new tank.
How long can two albino cories live in a 10 gallon? When will they be too big for it?
Cory behaviour...what you describe is perfectly normal. Cories do not like being moved to new quarters, and frequently will race up and down or back and forth across the glass wall(s) of a tank when first put in it; sometimes this lasts a couple of days, sometimes for several days and even a couple of weeks. I moved a group of corys from my 90g to my 70g and one of them behaved like this for 3-4 months, he's fine now (and had been before). They will (should) settle down, not to worry.
You can leave them in the 10g until the 20g is fully cycled (takes up to 8 weeks). They are sensitive to water conditions, so it is good not to add them to a new tank that is cycling. Once the 20g is settled, move them in, and add a couple more in a few days assuming your ammonia and nitrite are "0" which is where they should remain permanently. New fish should be added very gradually to a relatively new set-up so as not to crash the biological equilibrium. The bacteria will establish themselves in porportion to the available food (ammonia and nitrite respectively) and can multiply rapidly as the bioload is slowly increased. The larger the tank and the more established it is, the safer it is adding fish.