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Im restocking my 20g which currently has
an african butterfly fish
bn catfish
1 enamel fin tetra
10 albino cory fry

i was thinking of adding some tetras. How many tetras do you recommend for a school now many can i add?

Thanks!

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Truth doesn't always win friends but it influences them

The number of Tetras you could add will depend on the size/variety you choose.

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Keith

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i think im looking at a school of cardinal tetras.. these need to be kept in schools of around 6... is this right? would these be ok and would there be room for anything else?

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Truth doesn't always win friends but it influences them

Like Keith said, it depends on what type you want.

If you had only one school of say cardinals or neons...you could have about 10-12.

If you wanted Rummynose tetras you could have 8-10.

The bigger the tetra the less I would do. I think with most types though you could have atleast 8.

*Kristin*

what is an enamel fin tetra? If it is a schooling tetra you should add about 5 to the school so you have 6, and then you could add another school of 6 tetras if you wanted.

labrakitty- its an average size tetra about 5cm so not that big ive had it for a while after the rest of the school died after i accidently overdosed the tank with meds its mainly silver and i was looking to get some colour and life back into the tank.. i was thinking a school of 6 cardinals..and 6 other tetras i think ... i will have to have a look at the aquarium and see what i can find.. its so hard when you dont really know what you want!

thanks for all your help!

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Truth doesn't always win friends but it influences them

d,

What is the plan for the Cory fry once they grow up? If they stay in the tank then they should not forgotten in your equation for stocking.

So there are 2 larger fish (cichlid and BN), one tetra, and 10 cories. In itself pretty solid for a 20G. I would say that adding additional fish would depend on a few side factors:

What is your maintenance routine, and how often?
What filtration is on the tank?
Is the tank planted (real plants)?

And, in general, how long ago was the tank set up and do you consider it settled? Various tetras are not doing to well in unsettled (and don’t confuse that with cycled) tanks, for example Rummy Nose, Glow Lights, and even Cardinals.

Hope this helps,

Ingo

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Proud Member of the New Jersey Aquatic Gardeners Club

When your fish will grow, your tank will be pretty full, but if you plan of upgrading, then you can add a school of 8 Cardinals or Glowlight Tetras in your 20 gal. tank.



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Um, an african butterfly would/will eat neons or cardinal tetras!

If you go with tetras you need a non-nippy tetra that wont fit in your butterflys suprizingly large mouth!

Inky

yeah this is my problem! ive kept cardinals with an african butterfly before and there hasnt been a problem neons would be too small and would get eaten... the cardinals avoided the top of hte tank which helped.. they could probably sense the danger!

the corys are a bit of a problem! there are actually 10 of the lil mites swimming around..i would like to keep around 6 of them but i dont know what to do with the remainders.. albino cories anyone???

the tank has been running for at least 3 years now and i do a 25% clean every fortnite. As for filtration it has both an UG (which was my original filter) and an eheim cannister filter (added later). It currently has 3 plants (im not good on plant names.. it has big leaves though) looking to add more plants this weekend as well as the butterfly fish needs more coverage.

Im not really looking to upgrade as i already have a 55g running with cichlids in it.. and that keeps me busy as it is! that needs some work still it only has 3 fish in it!

Would i be overstocked if i added 6 tetras...

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Truth doesn't always win friends but it influences them

Personally I would stick to one variety of Tetras a school of Cradinals mixed with dark green leafy plants like "Anubias" or Java Fern can look very attractive. Both of these plants should be fixed to drift wood or natural rough type rocks

I also would think about changing your Water cleaning as you put it.

The small the tank the more care it requires. 25-30% weekly would be ideal. How often do you clean out the canister. I have a small eheim sponge filter in my Betta tank and that is cleaned every week.

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Keith

Near enough is not good enough, therefore good enough is not near enough, and only your best will do.
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i didnt realise it needed weekly water changes (water cleaning im having a bad day!its friday 13th after all!) ive never had any water problems doing it fortnightly.. will take note of that and start from this week! as for the filter i clean it out once a month.. is this not enough????

I think im going to go with 6 cardinals... like you said they should go well with the anubias (im learnig alot today!) :%) and safe with the butterfly fish as well!

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Truth doesn't always win friends but it influences them

I clean my 5ft tank it has a Eheim Pro11 monthly. The Betta tank 10g the Eheim internal filter is cleaned weekly.

But you must remember both of these tanks are pushed close to their limit. I have always work on prevention is better than cure.

I also add I bio starter at every water change this keeps the origional good bacteria healthy.

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Keith

Near enough is not good enough, therefore good enough is not near enough, and only your best will do.
I VOTE DO YOU if not WHY NOT?
VOTE NOW VOTE NOW

bio-starter?

ill be doing water changes for my 20g weekly now. Ive also added two more plants this weekend and one of them is quite messy so will have to keep up the cleaning..i didnt add any fish though.. i couldnt find any cardinals.. so i decided to wait a little longer till i find some! no rush.. i need to work on getn some plants and decorating a bit!

thanks for your help!

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Truth doesn't always win friends but it influences them