My shower drain is very very clogged with calcium and lime. DH insisted on going the chemical route (drain-o, CLR), and I've tried more tree-hugging methods *wink* (plunger, snake, a gallon of vinegar, hot water) and nothing has worked! Short of calling a plumber, does anyone have another other suggestions?? Oh, and the calcium and lime being there is my fault. *blush* I did not notice a small stream of water coming out of the shower head. It wasn't an annoying drip- it was silent, so you wouldn't notice it unless you actually stood in the stall. Because of another minor problem, we had been using the shower in the guest bathroom, so this went on for months until I went in to replace the shower handles and noticed it. We have EXTREMELY hard water, so the mineral deposits on the wall were thick. After fixing everything, I spent 2 days scrubbing the walls... I swept up most of it, but I think enough flakes and powder went down the drain to clog it.