do 50% water change to not stress shrimp. the cyano bacteria can be gently siphoned out in places with an air hose. keep at it and it should subside in about a month or two. be very very patient with it. prevent it from smothering your plants, that's most important.
I just got back from a month-long vacation. bowl is doing fine, the light looks like it has been working great. the bowl and shrimp lived fine w/o my care for a month, though there was a lot of evap. wouldn't recommend leaving a bowl w/o top offs for more than two months, or plants will likely start to dry up among other (concentration) issues.