upgrade from 400w to 600w got ??'s

im going to upgrde from a 400 to a 600 and was just wondering what am i looking at as far as improvement wise? like a 10% increase in the weight? or?? thanks in advance

UnderCoverAgentOrange said:

im going to upgrde from a 400 to a 600 and was just wondering what am i looking at as far as improvement wise? like a 10% increase in the weight? or?? thanks in advance

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I never used a 400, but I did upgrade from a 250 to a 600 about 2 years ago and it was like comparing the sun to a damn night light haha. the 600 watt is a beasty ass light and it will produce some HUGE ass plants if you let it. I have a plant in my tent now that looks like it was grown by the sun its so huge im talking taller than me and im 5'8 and the plant still has about 4 more weeks before harvest.

You can double your harvests, even if the wattage used is only 50% more. I moved from a 400HPS to a 600 HPS and am now back at the 400HPS because of space limitations after a move. So I have watched the difference from both directions, and it is significant.

Watch out for the heat!

yeah it's about a 5-10% increase in weight

It's a LOT more than that, lol.

thanks for the info guys and i had a un-aircooled(?) reflector with the 400 and have an air-cooled with the 600 so it should actually be cooler in there now

Youll have a bigger footprint, you'll be able to grow more plants = bigger harvest. I do a 6 plant lst in 3g pots vegged for 4 weeks. (4 weeks of rapid growth, not counting the seedling stage while roots are developing) I pull 3-4 oz per plant.

If you go by the gram per watt good gardener's goal then you should add 200 grams with proper space. That is if it's dialed in right and you know your stuff and also with a good heavy strain. I get 1.35 grams per watt with Sogouda,Lavender,Agent Orange and Bogglegum but less with medium yielding strains

Just to the math.. you're adding 50% more power to the area. Done correctly I'd expect similar increase in yield. This is why the gram per watt scale is an ok way to judge performance between mismatched systems. 1200 vs 1000..

Grams per watt per month. Don't forget that last part or the equation is meaningless.

Well.. the time thing that's not that big of a deal. It's not a time machine. A plant that is 8 weeks is 8 weeks under an 400 or 1000.. I guess I'm assuming that it's the same plant and done for the same amount of time. Equals cancel out?

Believe what you want. The equation has been hashed out for over a decade amongst pot growers, and the consensus is you use grams per watt per month to determine efficiency.

I think eDude's point is that if you have a plant under a 400 and move it to 1000, it won't be bigger. To get a bigger yield you'd have to add more plants. Just clarifying.

I can cover a 2.5x2.5 area with a 400w. That's 6.25 sq ft. With a 600w I can cover a 3.5x3.5 area, which is 12.25 sq ft. So that's almost double the foot print, you should be able to almost double your yield.

sigh......