I have a 9 gallon which is 3 weeks old. Got my pair of clowns from my 20 into here and they are happy as can be. About 8 pounds of rock and 10 pounds of sand which was in the 20 is in here. I also added about 600ml of copepods in and they seem to be breeding. Would it be ok to add a bubble tip as my lfs gets them in quite cheap and there like the red/ rose ones?