My buddy has a 300 gallon 8'X30"X2' and wants to stock it with as many jack dempseys as he can. It's his favorite fish and he doesn't have an account on this forum so wanted me to ask the experts how many adults he could house for life in his tank. He is running two FX6s and a 20 gallon wet/dry sump. He has plenty of separate rock formations and decorations. Thank you again, my friend will greatly appreciate it!