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post #1 of 10 (permalink) Old 02-15-2013, 12:37 PM Thread Starter
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Stocking cardinal Tetra

hello everyone

Im stocking my 20 Gallon High tank with a school of cardinal Tetras

Tank is 24in long, 16in high

It will be planted with Some Vals, Water Sprite, and red melon sword plants

How many Tetras can I safely shock in this set up?

Notice * I will be making 30% weekly water Changes
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post #2 of 10 (permalink) Old 02-15-2013, 01:53 PM
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I have a 40 gallon tank that I stocked with 20 cardinals among other fish. Admittedly, it is overstocked, but the tank is functioning well. I increased the filter capacity to handle the larger number of fish. If you want to play it safe, I would say no more than 10-15? The look great when they school.
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post #3 of 10 (permalink) Old 02-15-2013, 02:03 PM Thread Starter
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Originally Posted by pandamonium View Post
I have a 40 gallon tank that I stocked with 20 cardinals among other fish. Admittedly, it is overstocked, but the tank is functioning well. I increased the filter capacity to handle the larger number of fish. If you want to play it safe, I would say no more than 10-15? The look great when they school.

i was looking at 15-25 ....

i know there's the one inch per gallon rule, but i figured with weekly water changes , they can still be happy n healthy
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post #4 of 10 (permalink) Old 02-15-2013, 02:14 PM
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Stocking cardinal Tetra

I'd say the tank being "high" has more to do with stocking than the other aspects


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post #5 of 10 (permalink) Old 02-15-2013, 02:54 PM Thread Starter
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I'd say the tank being "high" has more to do with stocking than the other aspects


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how many would u put in this tank?
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post #6 of 10 (permalink) Old 02-15-2013, 03:04 PM
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Originally Posted by pandamonium View Post
I would say no more than 10-15?
+1 to that, especially if there are other fish in the tank.
With Cardinals, having a mature, pretty stable tank goes a long way in keeping them alive.

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post #7 of 10 (permalink) Old 02-15-2013, 03:15 PM Thread Starter
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+1 to that, especially if there are other fish in the tank.
With Cardinals, having a mature, pretty stable tank goes a long way in keeping them alive.

The tank is cycled already, I had blue Danios in there for a few months now.
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post #8 of 10 (permalink) Old 02-15-2013, 03:27 PM
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Personally I would start off with 10 and see how they do. Cardinals have a reputation of being tough to acclimate depending on stock and tank conditions.
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post #9 of 10 (permalink) Old 02-15-2013, 03:42 PM
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Stocking cardinal Tetra

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Originally Posted by houseofcards View Post
Personally I would start off with 10 and see how they do. Cardinals have a reputation of being tough to acclimate depending on stock and tank conditions.
This. And expect to lose a few


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post #10 of 10 (permalink) Old 02-16-2013, 09:21 PM
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15 would be my max. That will give you some room for other fish.
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