I'm contemplating using a plate.

desertpond wrote:

I've got the tetra 2" retrofit bottom drain installed now but it's not
really cutting it. I'm going to replace it with a 4" drain but want
to save some cash.

Any suggestions on what item I can use for the dome? One idea I guess
would be to use a black, round trash can lid, but I doubt it'll look
real good.

Thx