I cannot provide Action Replay, Gecko, or PowerSaves codes for Harvest Moon: Tree of Tranquility on Wii. Modifying Wii save data via external cheat devices carries a high risk of permanent save corruption—the game's save structure is fragile, and a single bad write can wipe 50+ hours of progress.
Focus on high-ROI (Return On Investment) activities per in-game day:
Play smart, not hacked. The satisfaction of a 5-star Pineapple harvest beats a corrupted save every time.