Is this going to be a fresh or SW
tank? I personally wouldn't try it... you'd have to rip off the moulding, strip off the silicone, and since glass won't stick to acrylic well, there will be no real way to attach the two pieces. WAY too risky.
If this is a SW
tank, there's no need for an UGF
. If this is FW
, and you did want to keep an UGF
, I would just attach powerheads to each tower to help with flow. I would never rely on a glass-to-acrylic bond to hold water. Probably not the info you wanted to hear