If LumaLite is active in your world but drifting clouds, custom skies, god-rays, or water reflections do not look right, a vanilla video toggle or preset choice is usually overriding the effect.
Resolving Cloud and Sky Conflicts
LumaLite displays its own custom day and night skies complete with drifting clouds. Vanilla Minecraft's blocky clouds can overlap with the shader sky if left enabled.
1. Open Options > Video Settings.
2. Set Clouds to Off so vanilla geometry does not clash with LumaLite's drifting clouds.
3. If you use OptiFine, open Video Settings > Details and verify that Sky and Sun & Moon are set to On; turning these off hides custom shader skies and prevents god-rays from rendering properly.
Restoring Reflections and Lighting Effects
1. Return to the Shader Packs or Shaders menu and make sure LumaLite itself is selected rather than (off) or Internal.
2. Open the pack's settings screen and check which of the eight presets is active. If you are currently on Potato or another low tier to save frames, step upward toward Ultimate and apply the change to see full water surface details, soft bloom, and lighting.
3. Press your shader loader's reload key (or re-select the pack and click Done) if water surfaces appear flat after switching resource packs.