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I bought several gavitas and found that height is a massive factor with these lights even with them at 8ft ceiling the heat from them is ridiculous. Either led or hps if i had a unit space then gavitas all the way. Be careful mate dont be upsold into buying something that will take you a long time you adjust too.
If I make plants of 80 centimeters to 1 meter in pots of 3 gallons, (indica) with a month veg time and 12-15 plants per gavita 1000w it has an interest to have a 1000w or would be better 750?
The hellion 750 W units are designed to run @ 1.9 not 2.1 which is the same as a 1000W DE without the ballast mounted without the lamp cord. You are gaining efficiency of the lam output.
The 750 is designed to give more than the 600W output over 1.2m2, increasing the Lumens Per sqft from 45 into the 60's with more wavelength in the PAR region. I'd get the 1000 if I had more then the 12.9 SQFT to illuminate.
You who had the experience, you advise me what? Which is the most efficient level yield 750 or 1000W in gram ratio per watt? 8foot height or 2.50 meter height would be a real concern for you mate dave? I saw that dog wars is growing with 7.5 foot and that he is doing well Gavita pro 1000de dimmé in 1150 can saprocher at how much of lapex maximum?
I'm looking to upgrade to new kit so buying old technology isn't an option really. Room size & application on the luminary is what you need to consider. If it's to be @ a permanent height or used as supplementary or the grow area will be used for strain variation the choice is based around these. Versatile aplication is what I am primarily after. I wouldn't use 'poot' shades as their figures when stuck alongside a premium double parabolic are significantly diminished therefore in my application "Redundant"
The Strain I want to grow max's out & like 1.4m in the time I am forcing my growth into therefore a 2m tall tent has above room.
The less lumens used will improve the GPKWH so being able to dial up & down with respect to the 'bell curve' of diurnal photosynthesis has benefits.
A lil extra heat can be beneficial if you have adaquate Co2 in the space, either supplementary or via increased airflow.
I'd primarily use the Gavita for mothers if there was no budget but I wouldn't pay that price tag when there is the other options.
My goal is to get out 10 LBS every 3 months to the minimum I have 2 bedroom (grow room) of a surface area of 300X300X8 foot I would do the growth and flowering in the 2 pieces, 1 month veg Max and 60 day blooming!
With variety of type, critical Kush, Og Kush, critical + 2.0 ....
I'm thinking of doing also in another room, a small space mother and cutting foot and the first 15 days of growth!