i know this is not for the tank,however i figure
it;s still DIY though. :)
this is what i did today,i still need to get tile grout,then i will be able to cover the grout with PVA and sand.
) for the big cave,two bits at 24inches long 2in thick.
next i began to carve out the shapes i wanted,in the top and bottom.
when put together to hold them in place is de-headed matchsticks.
the bits left over from carving were stuck to the shell of the cave with
PVA glue and de-headed matchsticks.
once the big cave was done,well i figure i would do a couple more now i got the hang and a little confidence.
all i need now is the grout and sand.
so i'll update again when i'm onto the second half of my little project.