A kind member donated several dozen MTS to me for working on the detritus and substrate in my Walstad. I saw less and less of them as the days go by till only 1 can be seen these 2 days. I guess somehow the chain loaches managed to find ways to eat them. Sigh. But this should be good news to some. Besides the chain loaches, other suspectssuspects are the yunnanilus cruciatus and the kuhli loaches. But these are probably less likely.