Not necessary. It will help speed up the cycle if you are doing a fishless cycle but I wouldn't do that with the frogs already in there. Way too high ammonia content is needed for that and will not be good for them. Just get an API Master Test kit and test every week until you establish a cycle then every month or so before water changes. With this type of setup you can probably get away with a 50% wc every 2 weeks once established, occassionally vac the gravel, and they should be fine.
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