The Planted Tank Forum - View Single Post - Hard water stains...
View Single Post
Old 09-26-2013, 04:19 PM   #10
Planted Member
zodduska's Avatar
PTrader: (4/100%)
Join Date: Aug 2013
Location: Oswego, IL
Posts: 290

I've used citric acid and paper towels with great results, no scraping required.

It's sold as "sour salt" in most grocery stores.
zodduska is offline   Reply With Quote