Hi,

I suppose it depends on how much movement you expect the eggs to have to put up with.

The substrate people use in the substrateless method is mainly to reduce the movement of the water and prevent it sloshing onto the eggs if you are a bit incautious while moving it etc.

As long as you are carefull then gentle handling fo the eggs shouldn't really be a massive deal.

I candled mine every week just to see the veins develop.


dr del