Am looking to add one more fish next month in my waterbox 25g now i have 2 small clown a gold head goby he eat frosen food and i have a 1.5" tail spot blenny my filtration is a filter floss that i cut from a roll i have a refugium in my middle chamber with a tunze light and i have a bubble magus qq1 skimmer i have think of the cardinal fish but i dont find them active a lot i will also do a custom lid