I'm out of pond snails. All the ones I could catch are cleaning my goldfish/ catfish tank. I'm gonna break down and buy snails. My otos are doing a good job of cleaning the glass, plants and some driftwood but they won't touch my bogwood or clay pots. My main concern is my bogwood. I've had good luck with mystery snails cleaning wood but I'm wondering if nerites might be an option. I have rummynose and cardinals plus there will be rams in there someday so shrimp are off the table.