Yes you could use an undergravel plate with course sand
over that.

But I, and most people are not fond of plenums.

And as substrate goes, the finer the calcium sand, the
better, and skip the plenum.

Wayne Sallee
Wayne's Pets



StringerBell wrote on 9/1/2006 4:03 PM:
Plenum: from what I read It sounds like its just a raised platform so that
there is water below the sand level.
Would a capped,un-connected undergravel filter be suitable to use as a
Plenum?
I havent set my tank up yet so I still have time to do this.
Is using a Plenum better than not using one? If so, why?

thanks for all