Thanks Chief_waterchanger for the reply.
There hasn't been much shell guarding as there constantly swapping shells.
As for your questions:
I use sand as substrate.
I keep the tank at 25 Degrees C.
I'm sure i have both genders as males are almost double the size of females.
I do weekly 20% water changes.
I don't know what my water parameters are. I was using the strips and read how in-accurate they were so i threw them out. Trying to get hold of the
API Liquid
test kit.
The Shells they have are 4inch in diameter with and inch across entrance.
I have the lights on a timer.
On at 3p.m and off at 10p.m
Hope this helps.