Environmental Issues
Freshwater Aquariums
Saltwater Aquariums

Will muriatic acid remove hard water deposits from a plastic tank used to mix salt water for aquarium use?

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Wiki User
2011-09-13 18:01:45

"HCL_or_CLR_are_ok" id="HCL_or_CLR_are_ok">HCL or CLR are


Yes, however it may not be the best choice. Muratic acid (HCL) is

Hydrocloric acid and used in swimming pools and labs to adjust pH.

It also generates free chlorine which may be bad for some fish and

your containers.

Not all plastic tanks are acid safe so check the codes for


Then TEST a small spot.

Better yet a hard scale or lime remover like CLR may work better

and dissolve faster.

A strong Vinegar or a weak Sulphuric Acid solution would also be

better than a HCL solution for fish.

Most fish are very pH sensitive so rinse very well...

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