Dodgey rocks

[fish face 101]

:confused: I have a tank that got polluted a bit by some dogy rocks a put in there by accident. I have took the old rocks out and have took all the substrate out. What should i use to clesn the whole tank so that it is pollution free?

[eums]

viniger or a way watered down meratic acid/water mix ( like 5% acid or less. )