Grape Ape is an indica, and so therefore should fit the bill. However, many people find that they fall asleep fast, but then wake later. For this reason, you might try an edible rather than smoking. Edibles take longer to kick in, and stick around in your system longer.
You might find this is a better recipe for insomnia. You don’t need to find a Grape Ape edible, any good indica based edible should do.
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