Aim the mist nozzles lower. You should be able to see the cone of spray as it leaves the nozzle. You need to aim it so that less/none hits the top screen.
Fortunately, most of the mist will be trapped by the screen, making the problem look/seem worse than it is. Unfortunately, some mist may still be getting through.
You should be able to see/determine if any mist is getting to electrical contact points on your lights. If so, raising them slightly—along with lowering the aim of the nozzles—should help.
No ingress of dust; complete protection against contact (dust-tight). A vacuum must be applied. Test duration of up to 8 hours based on airflow.
6
Powerful water jets
Water projected in powerful jets (12.5 mm (0.49 in)) against the enclosure from any direction shall have no harmful effects.
Test duration: 1 minute per square meter for at least 3 minutes
Water volume: 100 liters per minute (0.37 impgal/s) Pressure: 100 kPa (15 psi) at distance of 3 meters (9.8 ft)
That may be more difficult to find on T5 fixtures.
okay thanks! i think it was happening because some of the leaves in the enclosure were getting in the way. i moved my uvb in front of my heat lamp so it doesn’t get wet anymore.