The Cave ROVer Update: Rear Aft thruster optional guards fabricated and assembled. Removed 300g of recently added ballast weight due to being negative buoyant last test dive. Having recently flooded the ballast tanks and addition of the snag guards, working to dial in the neutral+ buoyancy. Once refabrication is complete on the gripper mount I accident cracked nose rolling to close to the pool bottom, with the gripper extended, might test adjusted buoyancy in the tub.