How many lights, and which type of lights, should I put on the Christmas Tree?
STRING LIGHTS:
String Lights - for a classic look, you can use what are now known as “String Lights”. String lights are the LED equivalent of what used to be called Fairy Lights. String lights tend to be reasonably well spread out but there is always the option to use a greater quantity to give a richer look to your tree. For help choosing Multi-coloured Ultra-bright LED Chaser Lights, click here.
You might consider 400 LEDs for a small tree; 600 LEDs for a 6-foot tree; 1000 LEDs for an 8-foot tree and perhaps two strings of 600 LEDs for a 12-foot tree.
CLUSTER LIGHTS:
Cluster Lights - for a really rich look, you can use “Cluster Lights”. Your tree will look really bright as there are many more lights per linear metre than you will get with string lights. A single pack of 2000, properly hung on your tree, should be adequate to cover a 9-foot tree; two packs will easily cover a 12-foot tree. For help finding a suitable pack of cluster lights, click here.
The lights featured in the above link have the added advantage of a built-in timer, meaning that they can be set to come on at the same time each day and remain on for 8 hours.