What lights should I use?

Definitely LED lights.........buy the best you can afford, lighting is vital for growing quality cannabis and skimping on this can make growing a waste of time. For a first time grower, 2 plants in that area would be smarter, maximum 4........6 is too many.

Welcome to the exciting world of growing! With your 120x120x180 cm tent and plans to grow 6 Gorilla Cookie autoflowers, choosing the right lighting is crucial for a successful harvest. LEDs are a great choice due to their efficiency, lower heat output, and ability to provide the full spectrum of light your plants need. Coverage Area: Ensure the light can adequately cover the entire 120x120 cm (4x4 feet) area. Light Intensity: Aim for about 30-50 watts per square foot of grow space for autoflowers. Full Spectrum: Choose a light that provides full-spectrum light, including blue and red wavelengths. PAR and PPFD: Check the PAR (Photosynthetically Active Radiation) and PPFD (Photosynthetic Photon Flux Density) values. Higher values indicate better light for plant growth. Heat Management: LEDs produce less heat than other types of lights, but good heat management is still essential to maintain optimal growing conditions. Recommended LED Grow Lights: Spider Farmer SF-4000 Mars Hydro TS 3000 Horticulture Lighting Group (HLG) 550 V2 RSpec Viparspectra P2000 By choosing a high-quality LED light and setting it up correctly, you'll provide your Gorilla Cookie autoflowers with the optimal environment for a bountiful harvest. Happy growing

High efficiency lights can do it with 460-500w, like the FC4800 and others. Less efficient may need 600watts, like a 600w zeus 'whatever' light. Their "pro 465w zeus" is comparable to the FC-4800 by mars too. Efficacy is what you pay for. As long as you have 75-85 umol/s per sq ft of the tent, it'll provide upper end of light that a plant can handle per day given ambient co2. 800-900 umol/s per m^2 if comfortable with metric. 1.44 * 800 = 1152 1.44 * 900 = 1296 So, you want a light that produces 1150-1300 umol/s of PAR. The greater the efficacy, the fewer watts needed. Anything promising over 2.9umo/J is probably lying 9 or 10 times. The trick with the EVO diodes is listing the efficacy just for the 6500K chips, which is not representative (3.14umol/J), since no grow light is 6500k plus the non-white diodes will draw the average down slightly too. If they lie about the simple stuff, they'll lie to you about anything. The umol/s power is what dictates yield - it doesn't matter how efficiently it is produced given context of typical grow lights. Efficacy will improve lognevity (actually get 50,000 hours of use), decrease heat produced by light, and save money on electric bill each month. If in a warm region, it will really benefit you to buy the more efficient light. If you are in a cold area, a less efficient light might save more in heating electricity, lol. but, it'll still die faster if it runs hotter. Unless the cost difference is huge, it's usually better to spend a bit more upfront for greater efficacy. 2.8-2.9umol/J -- You only need 465w for 1300 umol/s at 2.8umol/J.

Marshydro FCE4800, is also expandable with extra light bars. And you can use the whole area Or the best bang for the bucket VIparspectra. I use Viparspectra too, a XS4000, 2 XS 2000, 2 times a P2000/2500, all great and enough for 120x120 Be careful not to spend too much at the end they all use the same samsung diodes and the same meanwell drivers. All the same, put together in different shapes an pricing with different marketing. But hardware and software is exactly the same.

It really depends what your budget is for lights. People on here have great success with Syder Farmer and Mars Hydro lights. If you have the money to spend I’d take a look at HLG (Horticulture Lighting Group), that is what ai use in my tents and am very satisfied with performance and product quality. I’m not sure what you mean by 120x120x180. Is that CM or inches? If you’re in a 4ftx4ft tent I’d say 6 plants is a bit much. Yeah your pots will fit in there but you’ll soon realize you’re going to run out of real estate fast. Got to leave room for fans and humidifiers or any other type of equipment you feel like using. I would do no more than 4 plants but three would be more optimal in my opinion. There’s different methods. Some people like to cram in as much as they can and do a SoG or scrog. But I like to have my plants take up their space and spread out a bit more and I don’t want my plants to compete for space. Anyway, good luck with your grow.