This is the idea.
Most of the people with a ytong/basin make water reservoirs in the ytong, wich takes up space. So you have less room for chambers for the nest.
Well I was thinking, if you drill 2 holes in the ytong (about 1 cm deep). And you take a air-hose the same you use with airpumps, you put it in the holes with a T-connector and then connect it with a water reservoir.
(see picture)
advantage: bigger reservoir (less frequent refill), moere space for chambers in ytong
disadvantage: ugly construction in basin??










