I've been trying a few things the first part of the grow................ Like 5 to 7 days.
My Mars lights, in my opinion, just have too much blue light. I've tried to keep the PPFD down but keeping 24/0. It still adds up to the proper DLI for that particular stage in life.
It did seem to work well in the small tent with the new little 150 Watt Mars light. It seems to be pretty decent.
The girls in my 2X4 Tent under the Mars SP3000, didn't fare so well. That was because of the Mars malfunctioning dimmer, that I finally got them to send me another after almost a year. It was ridiculous how bad it was!
They are a good seven to 10 days behind. The good thing is they're on the verge of blowing up.
And that was with only 250ppfd if I remember correctly. That's 100 to 150 higher than what I like for the first week or so.
The 4 X4 tent With the HLG fire throwing demon, work quite well dimmed down and on 24/0.......... On the Seeds that germed. The HLG light doesn't have near the amount of blue as the Mars Light, also.
I thought I'd share what I found, especially this last grow. Maybe people can find something there that hits a cord.