Add Liquid F/X™ UV water dye for Dramatic water lighting effects. Particle free and fine nozzle/channel waterblock tested. Available in five colors. Highly concentrated with a mix ratio of over 50 to 1 so 1oz will last a long time. Just 1-2 drop per fillup will generally suffice. These are professional grade dyes used in illumination of water for commercial uses and are very bright with even a small amount. The above display shows the illumination under UV light.

Depending on how much you use the fire red looks light or dark red in the light and darkish orange neon look at night.

**Please note** Dyes will stain, so be carefull when using.