Tipps, Beleuchtung, Mars Hydro, dimmer

It's a very strong light. Not sure if spec sheet is accurate. You'd need to verify diode count.. 730w, .2watts per diode. Should have 3,650 diodes, give or take. Not all diodes in lights are "EVO LM301", but they are a small percentage of total, so if it's a little off, that's fine. If that does not match up, their 2.9umol/J efficacy and 2,117 umol/s PAR output might not be true. Assuming it's correct.. this light can cover 26.46 sq ft over 12 hours of operation while providing ~37DLI. In a 5x5 tent you may need to run at 95% with 12 hour operation. These lights have excellent light distribution (bars Q-boards). 14-18" is probably where you'll keep it. Try to strengthen sides/corners without sacrificing overall average. A simple lux meter can help with this... Differing readings from center to corners is proportional to umol/s, too. i.e. center is 100% and if corner is 2/3rds of that reading, then umol/s is 2/3rds also. for vege phase, 18 hour operation, all of that holds true, but run at 2/3rds the power. (inversely proportional to hours of operation, all other factors reamining the same) Math gets you close. Your local variables will dictate exactly what you do. You still have to observe and adjust based on the plant in front of you. How the plant grows is what matters, not some pre-ordained suggestion. If you use it in a 4x4, i'd start at 60% power for 12h operation... and 40% for 18h operation... From 14-18" -- again, proportional math helps. this is based on 16sq ft / 26.46sq ft, which is based on shooting for ~37 DLI to start. Same hanging distance etc... hanging distance should be about geometry and how the light spreads out. Unless you reduce power and get it closer early on with seedlings to save watts, hanging distance should remain the same, otherwise. You can use distance to dial things in but it is less intuitive / more difficult to predict without a calculator. inverse square law... many diodes... All of this is for mature plants. seedlings need their own plant... gentle at first with ramp up over time. This large light will be a bit inefficient with a few seedlings, obviously. if you have a smaller light, may want to use that initially. It'll take some experimentation to dim this significantly and get it ~10-12" from seedlings. Easier to predict precisely when only 1 factor changes.