Cheers for that Doc
Was thinking of something along those lines.....
Might try and have a split level set-up, with half the substrate being a couple of inches higher than the rest, held back with a large piece of slate.
Have opted for the 'fine gravel' as a substrate, as I've never used sand before, and I'm a bit cautious after reading different articles etc.
As for the caves, I've already made some pvc tubes covered with gravel, which my BN plecs have used for breeding already. So I'll make a few more of those I think. Coating them with silicone and then gravel, reduces the 'white-tubing-in-your-tank' effect !!!
