According to your situation, use a one-meter fish tank, nine dzi beads goldfish, five tiger goldfish and one pearl goldfish. One of them should be all black, two all red and one purple. Anything else? Black, full red and purple goldfish had better be as big as others and bigger than others. Remember to put it south, on the balcony, the balcony door is in the position of Qinglong (that is, facing the upper left corner of the fish tank). If it is safe and long-lived, it can also be replaced with 2-day pearls, 2 tiger heads/kloc-0 pearls, 2 phoenix heights and 2 lions.