Where I use them they are not submersible but still contain a small amount of water. I'll try sealing it with silicone, it should fix it. The red and yellow lenses work well, the blue one doesn't work very well. Maybe the color of the lightbulb just doesn't go with blue? In this light there is more white than blue. I haven't tried green yet.
Transform Your Room Into A Virtual Ocean With Lightahead'S Artificial Tropical Fish Dolphin Aquarium Lamp (Marine Life B)
12 Review
Aquarium set 6.8 l (filter, cover, lighting) Tetra Cascade Globe white
24 Review
Phlizon 165W Dimmable LED Aquarium Light For Saltwater/Freshwater Fish Coral Reef (20"X7"X2.4")
10 Review
Flexi Lighting System Size Black
11 Review
Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
26 Review
𧲠Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review
Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review
π U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review