I want to build column like structures out of new LR I have curing (and old LR in tank) but my rock is all quite small and I don't want to do the drill and pipe method. Looking for an online retailer that sells some kind of reef-safe cement. Does it exist? Want to avoid epoxy as it's not that strong for what I want to do (and expensive).
Any ideas on live structure building?
Any ideas on live structure building?