Porous Substrate

kaneda33

Small Fish
Jan 15, 2008
29
0
0
#1
Any opinions on whether a porous substrate is better than a typical gravel substrate?

I saw someone post this substrate on the forum the other day:
Volcanit Planted Aquarium Substrate
And I was wondering if the porosity of the substrate would benefit a non-planted tank which does not have an under gravel filter.

Looking at the afore mentioned substrate, I also wondered if it could cut bottom dwelling fish, or damage shrimp. Any opinions?