Have now made the rest of the backing sheets for the weir cover/background.
All going to plan - i will end up with a rockwall sufficient to cover the weir but it wont take up much floorspace due to its extreem height versus width - impossible with traditional stacking.
The original bit has had excess foam removed, covered in epoxy and live rock rubble - under the flash it looks a bit obvious but in real life it looks like one large rock
oh, and my nano clowns and nano nem had decided to start co-habbiting in my frag tank!