Mine is hidden in a closed stand anyway and I have tons of auxiliary stuff in it and sticking out of it. Two reactors, skimmer, heaters, god knows what else! Too many wire and pipes I know that!
I was just curious what others do. Before I added the LR, sand and chaeto I cleaned it out about every 6 months. That kept the coralline to a minimum. Well, I cleaned it twice, six months apart. I don't guess that is possible now so, I guess I'll let it grow!