that sounds like its about right to me. Thats what mine has grown in similar time periods anyways. I've had it about a month and a half and its grown about a half inch to 3/4 inch. They're actually sposed to be one of the slower growing leathers, and i can tell you that it is definately true. I've got 5 or 6 leathers (cant think offhand of all of them lol) and the fastest growers are the toadstools by far. I've got a regular one, a green one, and last week i got a gold one with super long polyp extension. Looks like a pincushion lol. I've also got a devils hand which is actually a bit slower growing than my fiji.
rkizer...if you've had yours almost a year and you still cant tell a difference from when you bought it, i'd say that something is probably not right. Not enough to kill it, but not enough to make it grow...you know what i mean?
I've heard that leathers really like mag. Or is it alk? :lol: i cant remember i get the 2 mixed up. But its one of those that they like to be a bit higher, so maybe check into that and check all your other levels.