beginner

Hello, i am new to reef aquariums, but i maintained several freshwater aquariums as long as I can think. I know the 1" of Fish per 5 gallon "Rule". But I did my homework and noticed with the wrong selection even this could be a problem. Additionally in a well structured tank, you could even...

I bought this yesterday and in the store it seemed fine. Once I got home it stopped opening and half of the “branches” are green and some are brown. Idk if it’s dying or growing. Side note: when I got home I noticed a tiny starfish in it. Not sure if that could be a problem as well.

Hello. My reef tank has began cycling and I'm researching which fish can live together (Out of a list of reef-compatible fish that i mentioned on another thread.) Recently, I came across many colorful hawkfish and I'd like to own one. However, I hear that they can live in a reef tank, but with...

Hi all. I just got my first tank set up yesterday. However, after doing more reading today, I may have made an error. I added the live sand to the tank, then added my tap water, and then added the salt concentrate, and mixed it all in the aquarium. Did I accidentally kill the live sand? No fish...