Re: [Killietalk] A little confusion on hatching first nothos

[Barry Cooper <bjc3 at centurytel_net>]

You definitely should put salt in the water for hatching. Velvet (a 
protozoan disease), which the salt combats, can kill fry quickly and 
without obvious signs. Most people in the US use 1/2 to one teaspoonful 
per gallon. If your aquarium water is fairly hard, you can get away with 
1/2 tsp. A few people don't use salt for Nothos, yet succeed. Most 
people do use it.

The fry can take newly hatched brine shrimp if they truly are newly 
hatched. That is, collect the nauplii as soon as you can after hatching. 
My own set-up is on a 24 hour cycle. I run two hatchers, hatching the 
brine shrimp twice a day and collecting the nauplii 24 hours, more or 
less, after I dunk the cysts (bs eggs) in the brine. When I have small 
fry to feed, I turn off the air to a hatcher that has been hatching for, 
say, 14-16 hours. I allow the newly hatched shrimp to settle, collect a 
small quantity, then turn the air on again to hatch the rest. Those 
shrimp collected on a "short cycle" will be very recently hatched and as 
small as they'll ever be. By the way, my system has an incandescent bulb 
shining on the hatchers, up fairly close, so the heat and light hasten 
hatching. My shrimp are fully hatched at 24 hours.

Feed the shrimp very sparingly. Many people over-feed them. Dead shrimp 
in the hatching container encourages Velvet. I also get the fry off the 
peat as soon as I can, generally within a couple of days. That allows me 
to put them in a clean fry box to which I add some snails to clean up 
any uneaten shrimp. I can also clean those boxes easily, which I can't 
if the fry are still over the peat.

You may want to re-dry the peat and try hatching again in a few weeks. 
You probably will get a good second hatch.

Barry

Barry J. Cooper
Sweet Home, OR 97386



Mike Clark wrote:
> Hi Jason
>    
>   Put salt in the hatching water , teaspoon per gallon thats a UK gallon which is 4.5 litres so you will have to convert it to US gallons.
>   Feed them on infusoria and micro-worms for a few days before adding brine shrimp. 
>    
>   Mike   AKA  BKA 
>
> Jason <rusticitas at yahoo_com> wrote:
>   I have some N. korthause Mafia Island eggs that are eyed up and appear
> to be ready to hatch. These will be my first Nothos.
>
> I'm a little confused about the water to hatch them. I've been perusing
> both the Beginner's Guide and a lot of web articles, but I can't really
> tell if I should put salt into the hatching water, and if so, how much?
> (Most recommendations talk about having salt in their tank for the
> fish, but I can't tell about *hatching* water.)
>
> Can anyone help clear this up?
>
> Thanks!
>
> { Jason Stanford - rusticitas at yahoo_com - Bethlehem, PA, USA }
>
>
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