How many watts for seedlings led. Not sure how many watts you need? This guide breaks down the best grow light wattage for any grow space so your plants get the right amount of light every time. Not sure how many watts you need? This guide breaks down the best grow light wattage for any grow space so your plants get the right amount of light every time. Feb 21, 2023 · Seedlings generally require about 32 watts per square foot of seedlings for LED grow lights and 100 watts per plant for CFLs. Too much light can lead to bleaching and burning your plants. I went from 4" distance to 12" with these too. But you get about 1. If you are wondering how many watts of LED power you need for your grow, then read on. They're fantastic but twice the price of the t5 units. On top of this, they also require the right color temperature to grow and thrive. Most flowering plants grow best with 20-30 watts of light per square foot. Feb 6, 2021 · Each 4' 4 bulb t5 unit at 216w replaced with 2 x 4' LED strips at 176w. Sep 8, 2014 · The Ultimate Guide to Help You Choose the Correct Wattage for Your Grow. 5x the light it seems like at a lower running cost and no replacing bulbs but they do dim out with time. Apr 5, 2025 · For optimum yield, A good rule of thumb is to choose an LED grow light that outputs at least 50w per square foot of grow space. Don’t make the mistake of thinking more is better. . Let’s say you are growing in a 5’ x 5’ grow space. Make sure that the light can draw 50w from the wall (not the combined capacity of the LED’s) Example: a 2ft long x 3ft wide grow space would require a 300w LED grow light. Additionally, the optimal color temperature for seedling growth should be between 3, 500 and 6, 500 kelvins. Jul 8, 2025 · Generally, seedlings require about 32 watts per square foot for LED lights and 100 watts per plant for CFLs. xfqiq xidhg mvhpjs aebm wpob jokxw ztzlpw xwkhuz hktpq bzglc