Cory fry tank

ZeroZ · Post by **ZeroZ** » 19 Jun 2004, 01:22

I have a small 12L tank for fry in a 1cm size, and i think that's a too small tank though

.
I have some thoughts buying/building a tank in the dimensions; Length: 50-60cm, Witdh: 30-35cm, Deep: 25cm. Are these dimensions good, or which should you have?

Do you think this will be enough for 100-200 Cory fry? Will they be able to find microworms in this "big" tank? What do you think I should use as filtratio, a big internalfilter whit a small net so the youngsters don't get traped in it?

Or is everthing just a crap idea? Please tell me!

PlecoCrazy · Post by **PlecoCrazy** » 19 Jun 2004, 04:15

I would use a couple of sponge filters for filtration instead of power filters. You don't want the microworms getting sucked up either. As far as your tank size, I only work with english units of measure. The tank does not need to be very tall, focus more on floorspace.

ZeroZ · Post by **ZeroZ** » 19 Jun 2004, 11:36

The tank does not need to be very tall, focus more on floorspace.

Yes I know.
I've converted the dimensions to inches:

Lenght: 23 inches
Widht: 11 inches
Deep: 9,8 inches

This would be 10,73 Gallons (40,6 Liters)

The tank has a rather short deepness, I don't think I can fit a Hagen 'double' Biofaum filter in it. Should i rebuild it and make it shorter?

Thank you for the reply!

fishnut2 · Post by **fishnut2** » 19 Jun 2004, 15:54

ZeroZ,
100 fry in a 10 gallon is about the maximum I would go. 200 fry can survive...but you'd be pushing the delicate balance of feeding/filtration for the fry. The slightest mistake will cost you some precious fry. At any rate...at 4-5 weeks, they will need a bigger tank! I use 30 Breeders for grow out...mainly for the large suface area. A 20 gallon should work...but will require more maintenance.
I agree with PlecoCrazy on the sponge filters. A seasoned sponge will have infusoria growing on it...and a large surface area for the fry to feed on. They won't suck up the fry, or the food.
Best of luck!
Rich

ZeroZ · Post by **ZeroZ** » 19 Jun 2004, 16:19

This is how I would be doing step by step:

First they hatch in a 2 Litres icecreambox.
After that they move to a floating nursery (floating in a 25 gallon tank) for 1-2 weeks.
After that they move to the 10,7 gallon tank. Until they're around 0,4 inches (1cm) they move back to the 25 gallon tank again.

Is it good to use a 25 gallon tank for these 'small' 1cm fry?

How do you take care of your fry? let me know everything!

Thank you!

ZeroZ · Post by **ZeroZ** » 21 Jun 2004, 19:43

Please let me know!

Allan · Post by **Allan** » 21 Jun 2004, 23:18

Moving them back to the 25 gallon tank at only 1 cm would be a bit to soon imo, let them happily grow to two cm before you move them to a bigger tank.

At 1 cm they can easily get bullied by even smaller fish, and they may find it troublesome to get to the surface for airgulping in a premanufactured, fairly high 25 G tank.

Your idea of building a 10 G quite flat tank for raising fry sounds great to me. Seen some very productive breeders having manufactured themselves long and wide tanks with a waterlevel at only 15-20 cm, and that worked very perfect. You get large bottom area for the babies to scavenge, large surface for gas diffusion and airgulping, and a short way for the fish to the surface. Good luck with that!

Kr
Allan

ZeroZ · Post by **ZeroZ** » 22 Jun 2004, 09:47

Hello!
Thx for the reply!

Moving them back to the 25 gallon tank at only 1 cm would be a bit to soon imo, let them happily grow to two cm before you move them to a bigger tank.

At 1 cm they can easily get bullied by even smaller fish, and they may find it troublesome to get to the surface for airgulping in a premanufactured, fairly high 25 G tank.

Yes, you're right. But if my Corys keep spawning and I get new Cory fry all the time, couldn't it get overstocked? Or will they grow fast in a 10,7 gallon tank?
I found a C. metae fry in the C. metae spawning tank (10 gallon) and it was around 1,5-2cm large! And it has actually grown alot faster than the other. So I hope I get the same result from the new tank.
Do you think I should use spongfilter too?

How do you take care of your Cory fry?

And one last thing: I hope Sweden and Denmark make a draw today in Euro 2004!

Allan · Post by **Allan** » 22 Jun 2004, 15:21

A draw would be mighty fine, but each team needs a minimum of two goals, for Denmark to make it. Can You fix a deal for that?

I must admit, it's been a long time now since i had any cory-fry. My C. adolfoi spawned three times in April, but i couldn't do anything about it, as i was moving at the time, and my fish had to be taken care for by a friend.

If Your cories are spwning at a high rate, then yes, it will get overstocked. But it easily solved, when You reach 100 fry in the 10 G, then You just build one more tank just like it

A spongefilter, as large as possible, is a very, very good idea imo. I am planning to install something like this with my next breeding:

as in this post: http://forum.planetcatfish.com/viewtopic.php?t=7124

Best of luck, hoping for Nordic dominans at this European Championship

ZeroZ · Post by **ZeroZ** » 22 Jun 2004, 17:53

I acutally don't understand the picture, how the filter works i mean...

You don't think I just can use a Hagen Bio Faum Double Spong filter?
http://www.pwss.nu/product.asp?intProdID=635

Allan · Post by **Allan** » 22 Jun 2004, 19:58

For sure You can use the product You mention, it will work just fine, and maintenence will be easy'er if the tank is supposed to be permanently stocked with youngsters.

Principal of the filter I show is, that you install a blocking wall of filtermedia across the whole tank (i.ex. your tank is 25 high and 25 deep, You will need a filermot of 25*25*5cm) - You then suck the water on one side of the mob and push it out on the other side, where the fish will happily be living. With this you can get a really high volume of filtermedia, but it's just a suggestion.

Now back to the exiting match

Kasper · Post by **Kasper** » 23 Jun 2004, 10:38

Ja nemlig ja