I have one Account lvl 185 Earth training with me at Sealord Warehouse on Cancer, I want to get her to lvl 199 and im doing instance with her, 15r, NT and how I train her at sharks simple I use e-remote and I use assist on sharks In her case bcz she is earth I use:

Stone Wall on her pet and Blockage in the sharks in the others rounds and she is gaining 700-800k exp but when is 2x event she got 1k-2k exp each battle =) Now she is at 72% to lvl up and be lvl 186 =)