Moina Macrocopa
How to Hatch Moina Macrocopa Eggs
How to Hatch Moina macrocopa Eggs Step by Step
Fill the tray with water. Open the microtube carefully to sprinkle the eggs into the water.
Add oxygen to the water. In the beginning, set the air control valve to the lowest level so the eggs won’t get stuck on the tray edge and the newly hatched Moina are very small. They can lose control when swimming.
If any eggs stick to the edge of the tray, use a dropper to wash them back onto the water surface.
After sprinkling the eggs into the water, they will hatch within 3–10 days. Look closely. Newly hatched are very small and almost invisible to the human eye for the first few days.
You can use a flashlight in the dark to confirm the hatching. Shine lights on the water surface and watch the shadows move.
After the eggs hatch, pour everything into the culture tank and supply oxygen.
If The Eggs Don’t Hatch
If the eggs do not hatch within 10 days, dry the eggs by pouring them into an aquarium fishnet and wait for 2-3 days. After the eggs dried, start the hatching process again.
When you finish this article, I suggest reading How to Culture Moina Macrocopa.
I noticed that about a hundred hatched by day 3, but they have started to “disappear”. By say 4, there were only about 50, 20 or so by day 5 and now today, day 6, I only see about 10 Moina swimming in my 15 gallon, planted tank with no other living organism. I did add some green water to the tank on day 3. Have kept the light on except when I need to sleep. What could be the problem?
Hello, You should start feeding them as soon as they hatch.
I did. They didn’t hatch until about day 3. Btw, day 7 now, and still about 10 moina hanging about. Did a partial water change to see if that would improve anything. We’ll wait and see.