lazy... or is there really a need, to do it weekly... water change schedule...

[f_luxus]

I have walstad tanks I havent water changed since they stabilized. I just monitor them for mineral replinishment and buildup. I correct that with evap water and never take water out except on the rare occasion when I accidentally over dose remineralizers.

Dominick
Aquaria Pro Aquatics

In the end, my concept is somewhere between Walstad and "modern" aquaristic.
I have some garden soil under a layer of sand, under a layer of aquasoil. Near the backside there are about 10cm of bedding, near the front about 5cm.