so far what i’ve done is bifurcated the substrate into 2 layers - the base substrate layer and what i call the waste substrate layer to accommodate the removal of substrate following bio-waste removal/spot cleaning - i think my thing is how to maintain good bio-activity and soil culture in the midst of needed soil changing/removal because the beauty of bioactive enclosures in arachnid enclosures is that it ages like a fine wine and truly becomes “alive” but this sort of thing seems difficult if i have to throw out some or all of the soil all of them time