Hi, I've only been on this site for a bit, but everyone seems very nice! I have a 20 gallon high, with two caves, several plastic/cloth plants, and an EX20 filter, with airstone and electric provider suitable for 40 gallons. So far, we have one cherry shrimp, one dwarf gourami, two albino corydoras, two black neon tetras (one died...), three longfin zebra danios, and three other small tetras. The tank is established, all are doing well, levels are good, and my mom wants a pleco. Why, I don't know. But I've heard a BN is the best, but we have no driftwood. Would we have to get some driftwood to go with it? Also, would a BN or Clown be better?