Marike and Willow Wish18 hours, 45 minutes ago
Not quite how it works. Underwater frogs, yes, 10 tadpoles and 10 froglets spotted in yours will give you 10 underwater frogs, but since you haven't started with frogs yet, you have to start with land frogs to get your first spawn. Every 5th land frog will give you spawn. You have 7 land frogs already spotted in your garden, so you would need 3 more to get spawn.
To know whether you are due any land frog, you look at the numbers of sets spotted in other gardens, a set is tadpole, froglet and uw frog (including ghostly frogs). For each set spotted, you get 1 land frog to visit yours. Once you have spawn and go underwater, you can then start the breeding cycle underwater with tadpole, who will then return as froglet and underwater frogs. If you post your numbers of how many you have spotted in other gardens, I can tell you how many you have due.