Oh yes , I turned it Down to 400w on the ballast . I'm a newbie myself but i notice people using led need to add cal mag , I only say this as you mentioned earlier in a post .
I see the canoeing on some leaves , I had same problem due to a heatwave in UK . Mind you I'm using 600hps in a 3x3 tent . Takes a bit to keep temps down .
It's worked wonders for my fungus gnat problem .
It may need a few applications . I use it as a foliar spray they mist the soil top too as like an all over barrier . My fungus gnats have gone .
Gutted I'm across the pond . It's a shame as you're doing a good thing that the greedy actions of a few could have potentially stopped you doing . Keep spreading the wealth . Respect from the shire
As long as your combined current does not exceed overcurrent protection you should be fine but fixtures have seperate overcurrent protection ( plug tops and fuses ) for a reason . Put up with 2 cables and route them better would be my advice .