Algun LED para 170x170x270?

Something that adds up to ~2500-2900 umol/s. Check out alibabba for the bar style (led strips?) fixtures. If you have equipment taking up sapce, deduce from that umol/s value proportionately for any area of canopy lost. 2.89 meters^2 is a pretty big space. without CO2 -- ppfd of 850. 850 * 2.89m^2 = umol/s needed to reach that guesstimate of max light. Roughly 2500umol/2. The extra i suggest is to offset natural dimming over 50-60k hours of use. As it approaches ~80% intensity, you can offset this the entire time and retain optimal covrage and intensity of light. Now, all of that depends on getting good parts. Look for Samsung LM301B diodes (3000k) and some sort of 660nm red mixed in - small proportions of 4:100 is enough and retains greater efficiency from the samsung white diodes. Also, depends on number of diodes. Probably in range of 85 diodes per sq foot -- sorry, you'll have to convert that to your area... the point is, if near that diode per area range, it'll run at a fairly low current, which will realize the advertised ~2.8umol/J you likely will see. If the product has fewer than ~85diodes/sq ft of coverage, it's running hot and the advertised efficacy is wrong and longevity is not true, either. meanwell drivers are decent. Stick to those parts and you'll get a good light in your price range. think meiju is a brand to check out. there are plenty that will match these sort of specifications. another way to check math of specs -- watts x umol/j = umol/s. along with the info above can make sure things balance out. a good omen if they don't lie and/or competent enough to type it out correctly, i think.