ok thanks for the help guys
this morning my big male is in the other cave and seems to be quite happy. which is good because the other cave may be a little small for him especially if another bn is in there with him, but i have read that bn need very tight caves. if my male has claimed his cave should i remove the other cave? they are at opposite ends of the tank. i actually wanted to order a round peppermint cave online from thefishcave.com but maybe if he like his current cave i should just wait to see what happens.
yeah i got my male locally from reynella aquariums. they have another male i chose the bigger of the two but the other male is still quite nice and both are in great condition for breeding. didn't pay that much for him considering other aquarium places were quoting me $200+ to order one in. haven't seen any girls around though.