OK at the risk of sounding like a moron.... How in the world do you switch this thing from red flashing to white?
WALTER R You have to change the bulb.
RONALD P You get two bulbs with the light. You just switch the bulbs.
RICHARD E There are two separate bulbs (red and clear). One screws off the top, removes one, and inserts the other (before entering the water).
todd C I don't see an extra bulb in the package. I will have to call LP when they open.
ABHISHEK A It's been a very long time since I used this particular night tank light, but I believe when you purchase the light, it comes with two different bulbs --- one is red flashing and the other is a continuous white. You can install whichever bulb you wish to use.