Schwack Posted January 12, 2021 Share Posted January 12, 2021 Hi folks, hopefully this is a quick an easy question for more experienced aquarists. My house came with a bunch of leaky, broken ponds in the backyard. I've since dismantled them, but I'm left with a bunch of rock that was used to make up the various water features feeding the ponds. Some of them are visually interesting bits of rock and I was hoping to use them in a new aquarium I'm setting up for my wife. I've given all these pieces a good scrub in some clean water, and generally the water runs cleanly off them. If I really hit 'em with a scrub brush, they'll give off a bit of rusty tinge. They don't react to vinegar or anything like that and seem to otherwise meet the requirements for aquarium safe rock. Does anyone see any reason not to use this rock in an aquarium? A quick bit of research says the rust won't harm the fish, but I figured I'd throw the question to someone other than Google. Thanks all! Link to comment Share on other sites More sharing options...
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