toilet tank rust

Even though we have a good water softener, my tank is abdominal. What is a safe and green way (including products to drop in & replace) to keep it clean?

 

Welcome to the forums!

Are they rust stains or particles of rust? Does it show up anywhere else? Do you know what type of plumbing pipes you have?

 

I know this is an older thread, but just in case someone else is having 'rust' problems, the orange or brownish rusty look in toilet tanks may not be rust but algae or diatomes (microscopic critters that are important to the ecosystem) they love the conditions in toilet tanks with untreated water such as comes from wells or lakes. Some even can grow in treated town water, not sure how they can survive the chlorine at first, but it dissipates into the atmosphere as it sits in a tank so I assume that's how they can grow. So if rust removal products don't work, look up algae removal from toilet tank ... And see if that's your problem.