series

Okay so I have an 18 gallon storage bin filled to the line with promix bx soil with 2 handfuls of blood meal, bone meal, & garden lime. I have always used this method & always got pretty good yields with using just fox farm big bloom during flower! This grow I am using the same formula but...

I would like to make a light for 4*2 area, i've bought the COB and passive heatsinks and holders. Clu048-1212 10pcs and 40wattage pin heatsinks. -The first thought I had was buying a hlg-320-c700 and running 10 in series, but after some more reading i've figured it might not be good to start...

I hate to make a new thread about drivers, but I find conflicting or older information when searching about thermal runaway and I'm sure it could help a lot of new users too (or at least me). Can you help me settle the advantages and disadvantages of low voltage (parallel) vs high voltage...

After multiple searches on RIU and the web, I need to call upon your help since I can't find answers. How do I run LED's of differing voltage on a single power supply? I understand that I need to add LED voltages in series together to calculate the voltage needed from a power supply. Do I do...