DIY projects

I've been working on this project for around a month. The planning has been going on for more than a year. With that being said, i'm a newb when it comes to this.
For many years, I have kept freshwater tanks. After a recent move, I got rid of everything except the tank itself, and I decided to change over to a saltwater tank. I sure that I am ready for the challenge and am interested in learning the new techniques for this new part of the hobby.
Heres the area before. unfortunately ...

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