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**Ravenshead** · 05-18-2012, 12:30 AM

24 hrs in RO based oxyclean and I'm not seeing any cracks. I'll keep it going for a couple more days. I bet I don't get any cracks. The next test will be charcoal filtered water.

Here's a relatively recent water report for my city if you're interested.

http://www.leaguecity.com/DocumentView.aspx?DID=2724

**Bobby_M** · 05-18-2012, 02:49 AM

Pretty high alkalinity. Mine is about 1/4 of that which is why I may be having trouble getting the cracks to form in long tests.

**Ravenshead** · 05-18-2012, 03:15 AM

I assumed there'd be a big difference. I'm looking forward to the charcoal filtered test now.

**Ravenshead** · 05-18-2012, 07:18 PM

It survived two days of RO with no cracks. I just mixed up a batch using tap water run through an RV filter.

**Ravenshead** · 05-20-2012, 01:46 PM

Two days soaking in the filtered water batch and still no cracks. Whatever it is, activated charcoal seems to take it out.

**Bobby_M** · 05-20-2012, 02:05 PM

Very interesting.

**Ravenshead** · 05-21-2012, 12:08 AM

Unfortunately, I don't know where to go from here without breaking out my old chemistry books. That's probably more effort than it's worth (not to mention most likely hopeless based on my current chemistry skills) unless someone out there has any ideas.

Anyway, now I know what not to do and won't feel bad ordering some more calibration stickers.

**skylor60** · 05-21-2012, 02:22 PM

Kinda crazy a bunch of homebrewers doing research for manufacturers and seemingly getting it done.

**starman** · 05-21-2012, 03:16 PM

10 years ago or so I had a pair of glasses with poly-carbonate lens fail in a similar fashion. One lens cracked completely in half and the other had a series of spider like radial cracks. They were barely a year old and the place that sold them said it was due to improper cleaning solution. I thought they were full of **** but maybe there is a golden BB.

It's crazy, the stuff seems so tough.

vortex · 08-27-2012, 06:45 PM

I have been having the same issue with my well water, PBW and two of Bobby's Sightglasses. I talked with Bobby today and he gave me the scoop on what he had gotten out of Five Star. The first one I thought I bumped it or stressed it, but not the second one I have only had in place for a few brews. Maybe Ravenshead and I need to send some water to AJ, and his big chemistry laden brain can figure it out. Sounds like it is pretty rare, but that's just my luck!

On a side note, Bobby made it right even though I was prepared to buy another one from him and was very quick with his response. Great guy, even better products! Thanks Bobby.