I have a female Leo and she is going to be 8 months old on the 13. Is there an approximate weight for he because I have yet to purchase a gram scale... And will she be ready for breeding this season or should I wait for next season ?
Each gecko is different. There are some generalizations that can be made about approximate weight, but no for sure way to just guess based on age. Nor can you really guess age based on weight, which is what I've had to sort of do with one of my geckos. If you are planning to breed, purchase a scale. You can find some pretty inexpensive ones quite easily online, and it doesn't have to be sold as reptile-specific. Just something that works From what I understand, you really need to keep track of a breeder's weight, because weight can be an indicator of health.
Since there's no average size/weight for geckos, it's more important to look at a gecko and see how proportional they look with their body & tail. A nice plump tail that's proportional to their body is a healthy gecko. A big ballooning tail that's wider than their body means the gecko is likely obese. A skinny pencil tail means the gecko should not be bred. So more so than weight, you have to see how the gecko looks and behaves. A good breeder is one that feeds well, acts alert, and healthy looking.
I got a kitchen scale from Walmart for $13. I've had it for a while, but shouldn't have changed much. It's digital and weighs in oz and grams. I just used a cheap plastic container with some paper towels in it to weigh my geckos, putting that on my scale.
I hope that helps.