Hi guys, my name is Luis, I was thinking about starting a thread but I've been following this thread for a few weeks and you guys seem like a family here so if you don't mind I'll put the question here, I am quite new to the hobby and a friend gave me his tank, he explained to me where he bought everything and well I have been learning a lot here at R2R, the thing is that he buys the sea water to do the water changes, it would be better to continue buying sea water or preparing the saltwater myself, sorry for the long text and thanks for the help