Take Pictures of your set-up, filters, skimmer, reactor, ect. Then take pictures of of all of your livestock. Take lots of photos. Then use a photo editor like photo shop elements or photodeluxe, You probably got one with your camera.
you want to do two thing: crop the photo to remove all of the edges that don't help the picture. Then resize the photo to the size you want it to be on the web site. This will help it to load faster.