white sand

Here’sa few pics of my aquarium, I’ve acquired some bunch of brown algae on the floor and some around the tank etc. please tell me how to fix this? I’m trying to get water correct before I put ANY LIVESTOCK in there!

Hey all, Having a debate with a good friend who is a multi tank reefer and swears by bare bottom tanks. A majority of them are SPS dominant with a few mixed. I on the other hand I run 3 tanks each with white sand and working on a black sand nem tank. I prefer the diversity:) So the great...