hi meat loaf,
hope u dun mind my 2 cents worth of comments.
i'll be going BB soon and i'll be using white opaque acrylic at the base mainly for a couple of reasons
1. distributed stress on the base of the tank
having pressure points at the glass base may not be a good idea but then again how long do we keep our tanks!!!
2. light reflection from bottom up
this will perhaps create addtional light for sps bottom upwards! bo liao perhaps but worth a try.
hopefully given time, coralline will grow on the acrylic and it won't look as wierd.
cheers,