SpiderWebMan.NET

Black Lights


GlowWebs are made from a special 5 mm (3/16 inch) diameter nylon rope that has fluorescing agents permanently molded into the nylon fibers so that they glow under an ultra violet light (black light). The glow is the same as a white T-shirt placed in front of a black light. The GlowWeb will not glow without a black light. I have tested the nylon rope by setting it outside in the sun and drenching rains for months and when you shine a black light on them at night they still glow the same as new. On this page I discuss the black lights you can use to make your GlowWebs glow.

How much glow will you see with different black lights? Watch this youtube video.


LED vs Fluorescent Black Lights
In general LED black lights give more glow for the money than fluorescent black lights. However, LED lights also produce more purple light than fluorescent black lights. Also, fluorescent black lights work better than LED black lights on black light posters. However, for the spider webs the LED black lights work great as long as you don't mind the house behind the spider web being a bit purple. I recommend using the 6 watt LED outdoor black light, but for those that prefer the glow from a fluorescent black light I recommend the 13 watt Spiral (CFL) black light that you can buy from Home Depot or Lowes for about $5.00 each.

6 watt CFL vs 13 watt CFL comparison

6 watt LED outdoor black lights
This 6 watt LED outdoor black light is my favorite. New for 2016 it now has a black body and star thumb screws on the mounting bracket. You no longer need a socket wrench to adjust the mounting bracket, just tighten by hand!
In the youtube video "Black Lights 2014 - The Sequel" I refer to this light as a "purple" 6 watt LED outdoor black light and is the light that tested best. It will give more than three times as much UV glow than the 3 watt UV black light. And it gives more UV glow than the 10 watt LED black lights that I have tested with. One 6 watt LED outdoor black light will work great for the 20 ft, 25 ft, and 30 ft webs. You will want to use two 6 watt LED outdoor black lights for the 33 ft GlowWebs and three for the 50 ft GlowWebs. Click here for the youtube video that compares the glow you can expect from various LED black lights. The 6 watt LED outdoor black light can be purchased on the purchase page.

6 watt LED outdoor black light

mounting suggestion for 6 watt LED outdoor black light
Mounting suggestion for the 6 watt LED outdoor black lights
(This picture is of the pre-2016 gray body light)

3 watt LED spike outdoor black light and 3 watt LED flat plate outdoor black light
The 3 watt LED outdoor black light produces one third the UV glow that the 6 watt LED outdoor black light produces. I ordered these by request because some said the 6 watt LED black lights were TOO bright. The 3 watt LED outdoor black lights work great for the Almost GIANT (20 ft) web and the GIANT (25 ft) web. For the larger webs I recommend multiple 3 watt lights, or the 6 watt black light. There are two mounting options: spike or flat plate. And there are two beam options: wide angle (120 degrees) or narrow angle (60 degrees). The wide angle light works best if placed 5-10 ft from the spider web. The narrow angle light works best if placed 10-20 ft from the spider web. The 3 watt LED outdoor black light can be purchased on the purchase page.

3 watt LED spike and flat plate outdoor black lights

Where do I put the black lights?
I put the black light about 10-20 feet in front of the web. But you can put them directly below, or even behind the web and still get a good glow. Also realize that the darker it is, the better the glow. If your web is near a street light it will not glow as well.

Side view of black light shining on GlowWeb