I have had a zigzag Nerite in my tank since March. He rarely ever went in the water, constantly cleaned the Outside of the glass at which point he'd be put back inside the water. That only lasted long enough for him to crawl back up the glass. Even manually put him on the veggies i put in for the snails, nope doesn't want them. About a week or two ago i added driftwood. Yesterday i saw him on the front glass again so i dropped him back in next to the driftwood. He hasn't left the water since. He's been going all over that driftwood and wont leave it lol. I usually do a daily "wheres Turbo" check, at least to make sure hes not on the outside glass, or the floor... The walls.... Ect ect. I hope this makes him happy and he stays in the water. Lol.