I am going to try 3 600w hps instead of 2 1000w over my 4x8 table. Im doing cool tubes with the bulbs and venting it. Gotta control heat. Has anyone made this type of switch? what should I expect with regard to quality, yield?

no one has any experience

why not just add one more 1000 to the setup. One would assume you would still get better yeilds with three 600's vs 2 1000's...I mean that is simple math...but if you can control the heat just throw another 1000 in there or a 600 even.

cant control the heat

I'm doing the same setup. Much bigger top buds thru out the table. I've chose this setup because a friend of mine show me the way to denser, thicker buds. The only problem I have is I couldn't adjust the height of each light as I please. Same amp rating (240v 3/600w=9amps) vs (240v2/1000w=9 amps 4.5 amps each ballast) instead of a four foot coverage.(2/1000w). You get about 2.5' coverage with 3/600w, inturn more intense lighting. You will begin to see that the buds in between the light will be much bigger and denser. Enjoy!!!!
-Always smoke dank in moderation-

I run 2-600's over a true "4'x8' table/inside diameter" and pull 2 1/2 p to 3p's off the table depending on strain------50#- 3 gallons pots sqeeze in the table.

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DR. VonDankenstine

wow ive been doing 2 1/4 with 2 1000w

I'm in soil as well------You're getting just a hair over .5 grams per watt which is good but not great---are u running co2?---how long are u vegging your clones? What is the nutes you are using?-------------My goal is 1 gram per watt-My last run was just under 1.15----the strain is "godzilla"--I veg the clones for three weeks then snap the light cycle. If you need help to get those numbers up, let me know.

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DR. VonDankenstine

the 600 you will be able to keep cooler and thus lower to the canopy. with propper ventilation you should not experience any loss any yeilds
peace and happy growing

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“I’m not lighting a joint and trying to stick it in someone else’s mouth,” she said. “I only want the right to medicate myself the way my physicians and I see fit.” -pamela sterling click here --> http://www.rollitup.org/medical-mari...tml#post193794

you have any photo's of ur grow dr. von? im interested in ur grow, im setting up a similar grow and would love to grow 3lbs in a 4x8/1,200watt setup...a/c- cooltubing em? co2?