We use start right whenever our fish get scratched up. It helps prevent infection and disease, plus we have lots of snails and they don't mix well with salt.
Our ABK is in our planted tank, which when we brought him home we knew we were going to have to give him shade. So at first we put fake leaves at the top of the water, it didn't look the prettiest but it worked.
When we rearranged the tank, my boyfriend built a little rock formation and took the leaves out. Our ABK, which we named "A-K" (as in the gun), he loves it. I love waking up in the morning and turning on his light and watching him dart from one side all the way to the other side and under his rocks.