i'm emptying my 40 gallons octogon reef tank and turning it into spesies only tank. there will be live sand, fake decor, and no live rock. i will have two not strong powerheads and a sump with bio balls and machenical filtration. i want to put in two raidi sea horses, sea moth, and one or two dragon pipe fish, also snails later and feather dusters. thank you. if too much, then let me know what must go. interesting thing though that some say one raidi needs 30 gallong and others say that a pair will be good in at least 15 gallons
