Think I'm using what you talking about:
https://www.ukaps.org/forum/threads...-sumped-hi-tech-450l.53354/page-2#post-534241
That is exactly what I’m talking about
So does not leach anything into water?!? As was my concern. If not is exactly what I need,I have some heavy stones which will be central in aquascape which can be elevated on this once soil is added into crevices..
Thanks again for posting
Hope so!
They made from polyethylene, which I understand is used on water pipes - so should be OK.
I managed to get my hands on some egg crate eventually , as if everything goes pair shaped/ don't want to have to strip down the whole aquascapeSince September. I've has losses, but only real big one since adding was white spot related. So in all, I think OK.