[SONIC-D]

There are types of black lights that will works But defiantly not actual black lights for display you buy at a head shop they don’t work but there are types like I have a “black light” floro bulb for my screen printing biz its not a real black light but a black light that probably could be used for growing it emulates certain sunlight rays as well maybe people are using them and they worked for them.

In a magazine I once read that adding mercury vapor during the flowering will increase yield and potency ive never tried this and I think it was around 94 when I read it but I did read it and it was a reliable source (high times). It was about the time I did my first grow ever and wanted light so I ended up with all florescent lighting I also used special bulbs called twist bulbs made for growing they kind of look like a black light but lighter you can use those for sure I did a entire grow with them back then and was defiantly a poor woman’s grow the hole thing was under $80 using a lot of florescent lights.