verbal
CCA Members
7 is one more that 6...
With the tank sizes I have kept, I found sometimes the next step up makes a difference sometimes it doesn't seem to.
For example I don't notice a huge difference between 24" and 30" tanks in terms of space etc. However 36"(especially if 18" wide) seems to make a big difference. I think going from 4 feet to 5 feet seems to make a big difference, but from 5 to 6 doesn't seem as significant an upgrade. However that may also be the fish I am keeping. If they were closer to a foot long(other than plecos) that extra foot may be a big difference.