Dear Master Lee, Out of interests, I have beenrearing some fishes and one lobster formonths.I wish theywould be good to me, and I would like to ask a favour from you for the following questions. 1) I learntfrom you that the best numbers of fish to be reared are 1, 4, 6, 9. Does it countthe other kindslike lobster or crab or turtle? Is it good to rear such kinds of animals? 2)The tank is placed in my study/store room, which is at the north of the flat. The tank is placed along the wall in the north facing south. Is it an ideal place? Thank you very much. Alex Chan