Corydora Egg Help

[leonadee]

Hello,
I currently have two tanks set up :
- 40gallon tank housing a pair of corydora's, a pair of pleco's, and 10 kuhli loaches.
- 20 gallon tank housing 6 guppies.

Recently my pair of corydora's have taken to making eggs for me everytime i do a waterchange, the first time this happened i did not know about the aeration needed to keep the fungus off the eggs, as i only have a sponge filter in the 40 gallon tank, subsequently all eggs died due to fungus.

HOWEVER! They have decided to place more eggs for me after this morning's usual water change. The tank does not have strong aeration, as i use only a sponge filter. I do have a small fluval external filter being used on my 20 gallon tank.

Should I move the eggs to a small plastic container and use airline tubing combined with an air pump (temporary, don't have an airstone atm).
I will be going out tomorrow to buy Methelyn Blue and an airstone (11pm atm), but i fear by the time i'm able to purchase the items the fungus army would've killed all the eggs.

I was also wondering if i did move the eggs to a small plastic container, would i need to use a heater to keep the water temperature to stay around the tropical range (21-26 celcious), or am i able to allow the temperature to drop to room temperature (summer atm).

If you guys were wondering, the eggs are fertile i assume as they have a small white dot inside the transparent eggs.

 

[Shaddex]

Congrats on the Eggs lol.

Get a 2 Ltr Ice cream tub and float it on the top of your current tank. Add water from the tank and add air stone etc.
Add a few drops of Meth Blue also.

Move the eggs to the tub. 25% water change in the tub every day. (This will remove the meth blue by the time they hatch.

Eggs will hatch between 5-7 days.

 

[leonadee]

So most of the eggs have turned white / a little more creamy but not fully white with a white dot, a few have stayed translucent with a black dot.
Do i take out the eggs that dont have a black dot?

 

[Shaddex]

As a rule, after a few days, you will see that the unfertalised eggs will get "Fluffy". Remove those ones.
After day 2ish, the eggs should apear "Pastel Greeny" with a black dot in the centre.

Just had 3 batches of eggs over the last few days so I am running the same as you are. Ill post a few pics tonight.

 

[leonadee]

Can't attach images because of the filesize limit, but i've uploaded the pictures of the few eggs onto imgur.
May be a bit unclear, used camera phone :\

http/imgur.com/l2j4P,oD0FE,6xqVT

I think the 2nd / 3rd images show the eggs, with the darkened eggs and the white-ish eggs. I can't really see if theyre furry, but should i be removing the white eggs?

 

[leonadee]

Update! Two babies have hatched~

 

[Shaddex]

Gratz !

 

[leonadee]

Thank you! Only 5 have made it! I'll upload some pictures when theyre a little bigger

 

[Shaddex]

Ive counted 40 so far .

and thats only from the first batch of 3 lots of eggs,

Think I need a bigger tank...

 

[leonadee]

That's still alot O: , 40 out of 170?

 

[Shaddex]

Batch of eggs 1 = 40 swimmers.
Batch of eggs 2 = 30 swimmers.
Batch of eggs 3 = Just coming out of their eggs !

 

[leonadee]

Holy moly, is it normal for baby fry to be unactive though? A bit concerned when they just stay stil for a long time, ocassionally changing spots

 

[Shaddex]

Mine kinda act like the adults do. Periods of still, then frantic smimming about.
Sounds normal to me.

Just make sure you dont overfeed them Anything less than perfect water conditions will harm the little fellows.

 

[Shaddex]

How are the Lil' fellows doing Leonadee ?

 

[snazy]

Mine kinda act like the adults do. Periods of still, then frantic smimming about.
Sounds normal to me.

Just make sure you dont overfeed them

Anything less than perfect water conditions will harm the little fellows.

Congratulations on the fry. It's hard work ahead

Make sure you don't starve them to death too which is quite common with cory fry. Food must fall on the bottom as well. Water conditions should be just fine if they are in a cycled and well filtered tank with good aeration. And if they are in a container with no filtration not many will survive due to bad water conditions even with regular water changes as it will soon be too small for them. Also, they need water surface movement that container for oxygen to enter the water. Container with still non moving water is going to suffocate them to death with the minimum delay in water change.
I always recommend the bottom to be fully covered with sand. Bare bottoms develop an invisible bacterial film which is harmful for cory fry. And I also put as many plant clippings as I can get from the other tanks. They help with filtering the water and the babies eat the microorganisms growing on them to snack between meals. Mulm from an established filter will also give them a lot of good microorganisms to eat. Don't worry about the messy look.