Buy new gravel, get rid of the old one. I would not use bleach as i never have used this before. How about just boiling the stuff ? Cheers jk :thumbup:
Are you saying you think the tap water would be sufficient to sterilize or are you going to use a different method? I wouldn't count on the chlorine in the tap to kill off everything. I've used bleach to clean plastic plants before, just used plenty of water conditioner to be sure. I think bleach is also used to regenerate seachem purigen. But then I guess you need to feel comfortable with your methods. I would only not use bleach on anything porous or something like wood.thanks Lorne, well got enough chlorine in my water so should take care of it and bleach is a no go.