The second plague was frogs across the entire land.
No worries, said Pharaoh’s magicians, that’s not so hard:
8:7 But the magicians were able to do the same thing with their magic. They, too, caused frogs to come up on the land of Egypt.
More frogs probably wasn’t what Pharaoh had wanted. Perhaps he really wanted his magicians to make the frogs go away. They couldn’t; and Pharaoh, the king of Egypt, was desperate enough to send for Moses and beg:
8:8 Plead with the Lord to take the frogs away from me and my people. I will let your people go, so they can offer sacrifices to the Lord.
But when did Pharaoh want it fixed?
8:10 ‘Do it tomorrow’, Pharaoh said.
Tomorrow! Why not now? Maybe he wanted to give his magicians just one more day.