Don't throw away water wheels!

When you're crafting the Mole Mansion masterpiece, you'll generate a ton of water wheels. Since space is tight and there are many bubbles, I was carelessly using and discarding water wheels. But later, the level-up quests also include making ponds, so you need to be careful when organizing your water wheels. Make several water wheels into bubbles, secure space, then place them all in the garden at once and quickly combine them to make ponds. Use up the water from the level 1 water wheels, combine them, then use the water from the level 2 water wheels to make ponds. Since water wheels are the only water source, if you don't want to go through the trouble twice like I did, holding onto water wheels is essential.