Andy Sager
Aquarium Advice Addict
What level nitrate do you consider high for the eggs?
That's a great question and today, you win the prize because I really don't know.
![no_no :nono: :nono:](https://www.aquariumadvice.com/forums/images/smilies/nonono.gif)
![Brows :brows: :brows:](https://www.aquariumadvice.com/forums/images/smilies/brows.gif)
In my case, with Angels and other fish I artificially hatch, there is no nitrates in the water until after the eggs hatch because I start with clean fresh water and use just an airstone. Since no ammonia is being produced in this process, there is no nitrate. In my current situation, having the sponge filters in the tank prior to the eggs hatching helps with the ammonia but it produces nitrates and in those spawns where I did that, I lost them before the eggs hatched and I'm not sure what the level was in those tanks because I never tested for that. ( MY bad and I should know better.
With the plecos, it's much easier to tell as the eggs are a little larger and so are the embryos. I candle a Pleco egg and I can see the yolk sac clearly as well as the red veins pumping blood. Wasn't able to see that even with the last successful albino cory spawn.
![Facepalm :facepalm: :facepalm:](https://www.aquariumadvice.com/forums/images/smilies/facepalm.gif)
Hope that answers your question.