Well, the clowns were not going to stay in the 5.5, they would have been moved, and i did water cahnges like every other day, there are three filters, one Whisper HOB (clown not in there), and one Duetto that is an inside tank filter, i also have a small palm filter (HOB). There was a 50gph powerhead in there that moved the water pretty well, creating good surface aggitation too. The water was always sooo clear and clean, and the PH and Nitreates and Nitrites and Alk. were always where they should be, but the reaosn they were hight when it ested last and posted them was because a fish died somsewhere in the tank. When i got the clown, they were very small, and the male still was, the female was not much larger, and the blue damsel was also very small. I was told by many people that i would be fine with just those fish for a while, but eventurally when the clowsn got too big, or i got my 75 setup, i would have to move them. i never had any problems with any parameters, and that leads tot he mystery of why my clown is gone. i searched ALL OVER the tank last night, moving rocks and eveything...no carcass, no bones, nothing. I have had crabs eat fish before, and they always leave some trace behind... and the crabs i had in there were only porcelean crabs and fiddler crabs, and hermits, no stone crabs or any of that other carnivorous stuff....
and if they would have lived up to today, they could have had this...