[Barbels]

I would much prefer to not use a top layer of gravel if I don't have to, but is Eco-Complete dense enough to hold down new plants?

I assume the Eco-Complete is more smooth and round than the Flourite, is it?

Than you.

 

[tsunami]

You do not have to use a top layer with Eco-complete. Also, Eco-complete is a slightly softer/definitely rounder substrate than Flourite.

Go for 3-4."

Carlos

 

[trenac]

Eco-complete does great by itself, no top layer needed. Just make sure to have a depth of 2"-3".