Maybe your lobsters are different from the blue crayfish (sold as Blue lobster in my area) I have. Because my cichlids would eat mine if put in the same tank.'I am surprised your cichlids have not taken out your blue lobsters.'
ive never seen any aggression toward the blue lobsters, quite the opposite in fact.
They even try to catch my oscar at feeding time
Have you ever thought of using an rc mini submarine with a small video camera attached to explore your tank?
You could make a documentary with a tank your size..
I did do several videos in the late 90's early 2000 period with a remote control submarine and 2 video cameras inside it.
Here is a picture of the late Stuart Grant (Lake Malawi exporter) playing with the submarines control panel.
The man sitting and watching him is Neil Burgess of the African Fish Zone (An African cichlid importer and breeder)
: BlackList 
