I finally found a local source for silvers at $9.99 each (just off the yolk) and my glass guy looks like he's finally coming through (8'x39") so the 1000 gallon is only a little ways off now. The wife is sold on the idea, and actually supportive. The entire purpose of this thing is to try to rais a couple silvers from babies to ????. So, I've read a whole lot, and it seems that a few would do ok in a 1000 gallon. What do you guys think?