How much water current do eggs need to hatch?

[Joefosho]

I have two bifasciatus that just spawned and was concerned that my royal and green phantom would eat the eggs during the night. The bifas laid their eggs on a clay plate. To prevent the plecos from eating the eggs I covered the clay plate with a clay pot put upside down. There is a nickel sized hole in the bottom of the pot that is pointing up and I have a small power head pointed not directly at the hole but in the vicinity. Will this create enough current for the eggs to hatch?

 

[duanes]

It might be enough. But you don't want flow to be so much that it dislodges the eggs, or blows the wrigglers around.
I usually remove the thing the cichlids have spawned on, to another tank and place an air stone a few inches from he eggs. Plecos will also eat wrigglers.

I keep the air stone near even when the fry are wrigglers, because if debris falls on the semi-mobile fry fungus can kill them.