) so things are moving around well across all surfaces.
Has anyone built these before? Is there anything I can do to speed up the process of leaching out the calcium? I don't want to go an epoxy route as the tank is already set up and I actually want some algae and aufwuchs to grow on the surfaces for my hill-streams loaches, also it would be very pricey for aquarium grade stuff.
I have seen some hints online including using vinegar, aquarium salt, and water softener salt. Aquarium salt seems to have had little impact, tried vinegar last night but haven't tested since. I have not tried softener salt yet but that is my next step.
All advice and anecdotes welcome! I want to stock this bad boy up!