Pleased to report that things are starting to happen with the two bass I was asking about the sex of a few posts down. This morning they have cleaned the sand right out of an area in their tank. They are flaring and circling each other over the site and the male puts his head down at an angle and is shaking at the female. Can't see any egg tubes as yet but here is hoping. Males lump on his head is also bigger today and both have really nice colour. Thanks to MonsterPeacock for his help and suggestions.