metal halid

hi so as the title says, i wanna use my 400w MH bulb with a 400w magnetic HPS ballast, i did some research here and on other places and it didn’t end with a conclusion, some said its ok and nothing to worry about and some strongly advised against it and their reason was that MH bulbs need lower...

been looking to upgrade from cfl to metal halide , ok so I've got 350watts of cfl daylight white in total wat to look out for specs wise and shit for metal halide ? For veg and flower , any help would be greatly appreciated

My wife and I ended up moving to a place were I had no attaic space and I also purchased a 600w MH Digi growlight. Due to all of this (New location + the heat from the lamp) I was forced to reconstruct my grow box from a closed unit to a partially reflective more open setup but honestly I like...

hey everyone. So I just ran into a annoying issue with one of my IPower 400watt ballasts. Everytime I turn on the ballast if will run for about 10 minutes, then it trips the internal breaker built into the ballast. Does anyone know what causes this? I have two ballast running off the same...

Before I screw this bulb into my fixture, is the residue built up inside mean it's a dud? It's the famous Hortilux Blue, just arrived in the mail.

Hello dear RIU fellas! :-) I've done side lighting before with different lights & setups. For my current grow I was thinking again about hanging vertical MH bulbs between plants for veg and vertical HPS bulbs for bloom, but I've heard that using MH for side lighting in flowering results in way...