Hard water build up

[lgsoper]

I've got some wicked hard water build up around the edges of my tank and I'm wondering what would be the best way to clean it with my fish still in it

 

[F1 VET]

I've got some wicked hard water build up around the edges of my tank and I'm wondering what would be the best way to clean it with my fish still in it

Razor blade.

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Go S.Vettel #1 RB8 3X WDC!!!!!!!!!

women?! pleeze. you're like one of my grandsons. I can't even visualize you thattaway, it's just wrong.
I forgot all about NLS.

you might wanna cut back on your jet fuel intake.

http://www.monsterfishkeepers.com/forums/showthread.php?504763-Cheap-plants-less-nitrate!-POTHOS