I am not a hydroseeding expert. I do not know what company did the seeding job. I am not sure, but the equipment looks to be a low end jet agitation setup. I thought the job looked OK to start with. We will see soon. Here is weather data for an ag weather station at Hudsonville, about 10 miles away.
High temp in last 10 days was 82, and high soil temp was 66. There was about 2.9 inches of rain. Near ideal conditions for the situation considering it is a spring seeding. There is no evidence of any hose or sprinkler.