I would like to add a young yellow tang from biota to my tank to help with algae control. The tank is a red sea E170. The display is 37g, 25"x20". I'm planning on getting a larger tank towards the end of the year. But if it'll out grow my tank in 6 months I'll just hold off on the new tank. Biota says they come in 1.25"+. That's pretty dang small. How fast do these guys grow?