"spiral_72" wrote in message
oups.com...
You da' MAN! (woman?)

..... all that searching and our very own NetMax has all the info.
Thanks!!


If you like that one,
http://www.2cah.com/netmax/diy_proje...ulptures.shtml wait
until you see the new one I'm working on now. I took a 6 foot extruded
styrofoam billet and carved it down to a 'rock' wall full of hidey holes
for the fish. It is now 58" long and 20" tall. I just finished painting
it (took 16 colours to get the sedimentary layer-look), and I bought more
epoxy this morning, so the sealing begins this weekend.

Even my non-fish friends are impressed (or just humouring me while
becoming further convinced of my eccentricity ;~). I've taken a few
pictures along the way, so if it works out, I'll put them up on the site.

ps: in regards to your question, 1 cu.ft. of extruded polystyrene
(styrofoam, and you wouldn't use expanded styrofoam) is 1.5 lbs, or about
60 lbs lighter than the cu.ft of water it displaces, so this is your
buoyancy factor. So far, silicone seems to have held it down without
problems (not too surprising, considering silicone holds more weight over
a smaller surface when holding a tank together), but I think proper
surface preparation is key.
--
www.NetMax.tk