CLR vs. Muriatic acid to remove hard water scale? - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 6 Old 12-10-2011, 08:06 AM Thread Starter
CLR vs. Muriatic acid to remove hard water scale?

Recently acquired a used tank with an unidentified white scale on the sides that I'm trying to remove. Turned the tank on it's front side and soaked the scale for a week with 100% vinegar and it still didn't scrub off. Was given advice to soak a small spot with either CLR or muriatic acid to determine if it was actually water scale, or if it was glass etching for which nothing can be done. Thankfully a small patch soaked with CLR for 2 hours has scrubbed away!...which means what I'm dealing with is probably just water scale.

So, my question is...which should I used to get the rest of this scale off...CLR or muriatic acid? I'm guessing the muriatic, because after rinsing, if the residue shows up in my filled tank water I can just adjust by using pH+ or -.

Thanks
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post #2 of 6 Old 12-10-2011, 09:38 AM
Yup, use the Muriatic Acid.
Reefing Madness is offline  
post #3 of 6 Old 01-03-2012, 10:07 PM
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can u use Muriatic acid on acrylic?

i have a dog named fish

30g long

55g -planted

125g 4ft long octagonal

55g
MALAWIS COMING SOON

10g hospital
-empty- :]
brokenrules69 is offline  
post #4 of 6 Old 01-04-2012, 01:02 AM
Quote:
Originally Posted by brokenrules69 View Post
can u use Muriatic acid on acrylic?
No.
Reefing Madness is offline  
post #5 of 6 Old 01-04-2012, 08:00 PM
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do u know what works good on acrylic?

i have a dog named fish

30g long

55g -planted

125g 4ft long octagonal

55g
MALAWIS COMING SOON

10g hospital
-empty- :]
brokenrules69 is offline  
post #6 of 6 Old 01-04-2012, 10:43 PM
Vineagar and water. If that doens't get it out, youi'll have to use a acrylic polisher like Novus 3 stage polisher.
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