Substrate

[sp1187]

greetings.
I'm getting closer to actually getting water in my 150 Tall.
I'll be running (2) gyre 200 vertically in opposing corners of the tank, alternating on/off between the two.
what size sand would you recommend so as not to have sand storms?
and I was thinking maybe 2 different sizes? a larger size all the way around the tank, maybe inward 3" from the glass, and a smaller diameter inward of that.
thoughts?
thanks
Mike

 

[mjlash22]

I personally like caribsea special grade. To me it's just right, not to big and not to small for grain size.