Hi all its been a while but i finally got my tank set up! It has 4 banggaii cardinals and two Reidi seahorse about 9 inches long. I was wondering if i could keep one cuttlefish with the horses! I dont really care about the cardinals but i need advice ASAP because i just got a chance to get one and need to know very soon! I'm somewhat positive the ponies will be allright but i need expert advice!