Albert Barnes Commentary Psalms 105:29-36

"He turned their waters into blood, And slew their fish. Their land swarmed with frogs In the chambers of their kings. He spake, and there came swarms of flies, And lice in all their borders. He gave them hail for rain, [And] flaming fire in their land. He smote their vines also and their fig-trees, And brake the trees of their borders. He spake, and the locust came, And the grasshopper, and that without number, And did eat up every herb in their land, And did eat up the fruit of their ground. He smote also all the first-born in their land, The chief of all their strength." — Psalms 105:29-36 (ASV)

See an account of these plagues in Exodus 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.