UV on green water

• pH:
• Temp:
• KH:
• GH:
• NH4:
• NO2:
• NO3:
• PO4:
• Iron:
• Dosing: 35 mL Excel, 1.8 ppm PO4, 15 ppm NO3, 1 tsp MgSO4, 2 tsp CaSO4
• NO3:PO4 Cumulative Dosing Ratio: 15:1.8 = 8.3

Notes:
50% water change:
20 mL Amquel+
2.5 tsp baking soda
15 ppm NO3
1.8 ppm PO4
35 ml Excel
1 tsp MgSO4
2 tsp CaSO4
The green algae is slowly but surely disappearing from the plants. The bit of green water, though, is still persisting. An overnight run of the UV did not work. I probably have to run it for a longer period of time, but I'm afraid of it causing a reaction with making some nutrient unavailable to the plants as experienced in previous longer runs. I will probably run it for a longer period of time just before the next water change.

As for the %^&* snail problem, I will probably start trying to look for some loaches, either the yoyo or kuhlie loach and hope they eat the snails without eating the shrimp.