Yes it is 30 uk gallons the tank is a recently "Cloned" tank i uses a fluval 303 External, I dont belive it is the betta, he is lazy and laid-back, Wouldnt hurt a fly sorta guy. + all of the 4 Black Widows i did have are all dead ='S
Stocking is:
1x RTBS (Deceased)
4x Black Widow Tetras (All Deceased)
4x Albino Corydoras (1x Deceased)
1x Betta (Alive and still goin)