Kushizle said:

I’ve been reading a lot of conflicting information about this. Some people are saying HPS causes more stretch with quicker growth and others are saying MH causes more stretch with quicker growth. Who is right? Does anyone have experience vegging with both? I’m currently in early veg and have both HPS and MH bulbs and I’m wondering which one I should use. I’m trying to get as much stretch as possible in early veg before I flower under a fluence spyder-x LED. Thanks!

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MIMedGrower said:

I should have added that HPS vs MH of the same wattage Hps will grow a bigger plant faster. This has been teated by the university of michigan. They recommended (before led testing now) using hps the whole cycle for best growth.

But like said above you can use these tools to fit your purpose.

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MIMedGrower said:

Here is a good article.

Metal halide vs. high-pressure sodium: An age-old question for cannabis growers - Marijuana Venture

While the technology behind indoor plant lighting has evolved rapidly, one thing has stayed fairly constant: Most growers still prefer to use high-intensity discharge lights…

www.marijuanaventure.com

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GNick55 said:

pretty thin..
we’re talking marijuana and trichomes.. anyways a debate not for me.
just giving my way, not pushing anything or putting anything down.
thanks

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MIMedGrower said:

But the op just wants to know which will grow the biggest plants before flower.

I didnt know I was causing a debate about it.

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JWM2 said:

I like a mixed spectrum for flowering. The blue helps stretch but also keeps the flowers more compact and dense while adding to the overall resin production.

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