See an account of these plagues in Exo. 6–11. Compare Psalms 78:43-51. This is mostly a mere enumeration of the plagues in the order in which they occurred, but without, of course, the details of the circumstances attending them. There are no circumstances mentioned here which require particular explanation.
Related Commentaries of Psalms 105:29
Psalms 105:29-36
29 He turned their waters into blood, and slew their fish.
30 Their land brought forth frogs in abundance, in the chambers of their kings.
31 He spake, and there came divers sorts of flies, and lice in all their coasts.
32 He gave them hail for rain, and flaming fire in their land.
33 He smote their vines also and their fig trees; and brake the trees of their coasts.
34 He spake, and the locusts came, and caterpillers, and that without number,
35 And did eat up all the herbs in their land, and devoured the fruit of their ground.
36 He smote also all the firstborn in their land, the chief of all their strength.