I am preparing to install new shower doors in my bathrooms, so I want to get rid of the hard water problems on my fiberglass shower and my tub. Is there somehing out there available to remove the stubborn deposits? I have tried the "Home Depot" products at their stores & no luck. I anticipate some elbow grease in whatever I use and or can let the chemical sit to work. The shower has raised nubs (to prevent slipping) on the floor, so getting to the base is a problem too.:confused:
Thanks

Fiberglass showers have always created a cleaning problem. There are some chemicals that will make it worse if you use them - by actually being destructive the coating on that fiberglass shower. Try using some gentle circular motions at the stains with a soft scrubby or some baking soda. Just remember the more you scratch up some surfaces of these premade shower enclosures, or use very harsh chemicals, the more you can add to the problem.

I am just going to add a bit of safety to this because I see so many people doing this...
When using harsh chemicals of any kind in that small enclosure, remember some good ventilation.

There is a fiberglass cleaner and polish available by the sinks and tubs at Home Depot. It is called Gel-Gloss. You apply it like car wax and buff it out.

And even after all this you may still have a discolored tub. My last attempt was to soak with CLR and scub with a 3m fiber pad or soak with ammonia and a pad. Got several clean that way along with BarKeepers Friend. A few never cleaned up and I repainted with Rust-oleums Tub and Tile paint. Rust Oleum Tub and Tile paint available from Zinsser Asia Pacific - Zinsser Asia Pacific

Sorry, have to pine the safety thing again. Only because I have seen and heard too many forgetting.

Always make sure you never mix cleaning agents. If you try one cleaner, make sure you rince the heck out of it before applying another cleaning agent.

After scrubbing with a daily clarifying shampoo(99 cents) and using the Gel Gloss my 25 year old fiberglass shower surround looks pretty damn good. Just lots of elbow gease involved and then keeping it up every few months.