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Hi All This may be an obvious question but can anyone identify the small blue globular growths in the attached photo's. Thanks

Pretty new to this great hobby but loving it. Was wondering if using actual ocean water for water changes creates any problems? Cheers

Hi all, I have just purchased a used system and have set it up. I am very much a newbie to the hobby but am really excited about getting into it. I'll have plenty of questions and will post as they come up. My first question is about the water test kits. What do I need to star out with. I have...