Yeah, if she's boxed up and the back end of her belly drops down that means she's ready to deliver, but it could still be a couple days.
Put her into the net for the night and then if she hasn't dropped by the time lights go back on in the morning put her back into her regular tank.
If you have a grow out for fry, puttin her directly into that is probably the best idea so she isn't crammed in a small space and that way you don't need to pull her back and forth
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