Can I switch from sand to gravel?

[JuiceBox52]

One thing to note, my fish breed in this tank and they’re fry that I couldn’t take out. How could I avoid killing them or getting them killed?

Is there a way you could remove them with a paper cup, it is safer for the fry than netting

 

[Colin_T]

let the fry grow up for a bit before changing the substrate, or move the fry out, but don't lift fry out with a net because you can stuff them up.

 

[wtusa17]

let the fry grow up for a bit before changing the substrate, or move the fry out, but don't lift fry out with a net because you can stuff them up.

Ok. I don’t think I’ll be doing this until the pandemic is over anyway. I have to wait until they are big enough or aren’t breeding