HPS Lamp Question..

I would start off with a couple 600 watt lights then add more as needed....especially if this your first grow. You will make more mistakes...wait till you get everything dialed in before you invest tons of cash on many plants. You will get a pretty good yield off of 2-3 600W lights. I would go with 2 HPS 1 MH if you go 3....your light coverage will be much better than with the 1Ks...the lights may not heat your entire basement but I'm sure they will have no problem keeping the air around your plants warm....move em in until you get you desired temp and light footprint. You can always put up plastic that would trap the heat from the lights better than without.

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Originally Posted by Just A Beginner

So how many would you suggest for an area of 9'x9' ?

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Sure man, I can work out exactly how much you need but it'll take a few minutes or so and I'm going out soon but I'll post it all up later.

Hi again :thumbsup:
We've been moochin and have decided on..
2 x 600w lamps with metal halide for veg & sodium for flowering, throwing in a couple of 125w envirolites as well.
As the room is 11'x12' would an extractor fan of 350sm be sufficent with a carbon filter attached or should we beef it up ? Obviously a couple of oscilating fans would be directed on the plant as well. Hoping this would be enough to get us going, and probably add another light or two as we get greedy and wanna grow more plants lol. We have 13 seedlings, 3ish weeks old under a 100w cfl at the mo, which we would like to grow to be big bushy plants with lotsa bud, well we can dream n hope lol :p