Rock left outside

[Suncastle1]

Broke down my 180 3years ago. Left rock outside. Is it possible to use this rock again?

 

[FMF0331]

...

I don't see anything wrong with that, I also broke down my tank 2.5 yrs ago. Bleach it and let it soak in fresh water for 2 week..changing fresh water everyday. Rocks are now in my 55 cube.

and picture is sideways again. So annoying

 

[Suncastle1]

Thanks for the reply. Should I use bleach, vinegar or muriatic acid?

 

[theMeat]

muriatic acid, then rinse, then let dry or a few days

 

[Suncastle1]

Thank you.

 

[FMF0331]

...

Thanks for the reply. Should I use bleach, vinegar or muriatic acid?

i used regular household bleach. kept change water until the smell of bleach was gone and then added to tank , cycled tank with carbon