first saltwater tank

hello, I recently moved my fish from a 20 gallon, to a 44 gallon tank. When I put in my rocks, I noticed a strange white fuzz on them, I included pictures. Anyone know what it could be?

hello, I bought a basket of different shells, with a starfish, from a gift shop while on vacation. Even though I rinsed everything, I’m not quite sure everything is fine. I didn’t think about it before, and I just put the shells and the star fish in the tank. I’m not even sure if they are real...

I've only been keeping freashwater fish for about 3 years and have learned a lot Ie., the nitrogen cycle, testing, disease management etc. So I thought I would give saltwater a try. I may be sorry I started so small but the cost of all things related to saltwater and reef and fishkeeping seems...