Who Gives A Fish Forums

Crypts are notorious for melting when moved. Even if your tank conditions are perfect, they might still take months to recover. Patience is key. Also, what species of Crypts are they? Some are harder to grow than others.

I've had Crypts melt on me before, and they always came back eventually. Just keep doing what you're doing, and don't panic. They'll bounce back when they're ready.