Are you sure you're seeing hard water deposits?  Some balls change color, lightening to a degree, after a hot water bath.  This is called phasing, and will return to normal after a time.  If it really is hard water deposit, some vinegar and elbow grease should take it off.  --  JohnP

I will try some vinegar though.  That should not harm the coverstock.

Thanks.

its probably a burnt mark...

I think I have an idea what you're talking about. However, from my experiences, it only seems to happen to Brunswick equipment. The only two balls I've had this happen to are an Ultimate Inferno and my Fury Pearl. I've put Ebonite equipment, Hammer equipment, Columbia equipment, and Track equipment in the sink for hot water baths with no problems whatsoever.

What I notice with Brunswick equipment is the balls, after undergoing hot water baths, come out with a white film in random patches all over the surface. The phasing phenomenon seems like a viable reason, but the white film disappears if scratched with a fingernail, leading me to believe it's something physically on the surface. I usually clean the ball with rubbing alcohol to get rid of the film.

At first, I thought this was an isolated phenomenon, but it seems other people are running into this problem. I'd be curious to know if the people that have this problem (i.e. Bowlin for Beer) are seeing it happen to Brunswick equipment only.
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"Nobody in the game of football should be called a genius. A genius is somebody like Norman Einstein."

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