Sulphuric acid will disolve the balls, but the VIOLENT reaction of the acid hitting the water WILL crack/blow up the bowl and stuff it. Plunge the blockage.
ACID BURNS, USE GLOVES AND GLASSES WHEN WORKING WITH IT
All advice is given with-out seeing the job, and hence all advice MUST be taken as advice with limited knowledge on the exact situation. NO responsibility can or will be taken. And yes, I am a licensed Plumber and Drainer with my own business in Brisbane Australia.
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