The marine aquarium hobby has made enormous progress in the last few decades. Keeping stony corals and various tropical animals has become possible thanks to new equipment and knowledge. Many marine life enthusiasts living by the ocean in the temperate zones of the world have a dream of keeping organisms from their local environment in aquariums. Until recently, both the equipment and information were hard to get. The knowledge of keeping these organisms is still lacking to a great extent. But various case studies are showing up on the Internet. I set up my 265-gallon coldwater macroalgae tank in 2007. It has been running for two years now.
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