stones

Hello everyone, I have a cold water tank with a few goldfish and I’m fed up of the gravel from the local pet shop being stained with algae and hard to clean. Would I be able to grab a few small pebbles from a friends garden to pop in the bottom or would they cause problems with parasites or...

Hi all, I know this has probably been covered a million times before but... I have some rocks i found on the beach several years ago and have been in my garden since, so have been rained on/watered with the plants, will it be safe to put these in my tank? I have scrubbed them with hot...