Dirty rocks

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cooperturner

Aquarium Advice Regular
Joined
Dec 18, 2013
Messages
59
I have just got a second hand 40 g tank and it's gravel is really dirty does anyone know how to clean it!?
 
Brush cleaning, H2O2 bath.

I already did it with javel but it's sooooooo looongggg to dechlorinate after... Need dechlorinator to remove bleach agent.
 
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