Are rocks or wood a good idea for my aquarium?

Are rocks or wood a good idea for my aquarium?

Marc Grover (Professional Aquarist) gives expert video advice on: Where should I put the aquarium?; What type of light does my aquarium need?; Should I use gravel or sand in my aquarium? and more...

Rocks and wood, natural ones, are excellent for freshwater aquariums. Live rock, which is a piece of coral reef, is actually for a salt water aquarium. When you are using rock and wood, you have to make sure that it's the right kind. You want to make sure that it's not something that you just dug up out of your backyard. You want something you buy from an aquarium store that's not going to have any toxins or coatings or anything that can possibly hurt your fish.