An aquatic frog that’s only 1/2″ after a year? You’re either starving it, a poor judge of size, or just plain lying. Lady, you’re in Minne-fucking-sota and here in the good old US of A, there are two types of aquatic frogs available in the hobby. ADFs are one and ACFs are the other. If your frog is albino, then there’s a 99.9% chance that it’s an ACF. ACFs may start out at 1/2″, but they goddamned well don’t stay that way for a year. Period.
P.S. “Platy’s.” Jesus H. Christ. ARRRRRGGGHHH!