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Don’t Use Greenhouse Lights Indoor or 1:1 HPS Replacement

May 26 2023 – Danielle Daly

Don’t Use Greenhouse Lights Indoor or 1:1 HPS Replacement
Don’t Use Greenhouse Lights Indoor or 1:1 HPS Replacement

Educate a friend, facility owner or grow shop: Do NOT buy Top Light/Greenhouse lights for Indoor cultivation if you are looking to maximize yields. ⁣

This industry 1:1 HPS replacement is sold to under educated buyers. We are not picking on anyone specific - our Greenhouse Light is above too - but we would never sell it to an indoor grower. ⁣

𝐓𝐡𝐞 𝐫𝐞𝐚𝐬𝐨𝐧 𝐰𝐡𝐲: These lights are designed to be hung up high to give supplemental light to the canopy in a greenhouse. NOT primary light. If hung too close to the canopy - you will have a long narrow hot spot of light intensity and not enough light on the sides - even to grow lettuce. ⁣

𝐓𝐡𝐞 𝐏𝐫𝐨𝐛𝐥𝐞𝐦: Most LED's lose ~25% light intensity every 12". Therefore, if you hang this greenhouse light up high - you get good spread - but you have lost canopy light intensity and therefore a reduction in YIELD. Unfortunately, most companies will not even produce a par map. 😞 ⁣

𝐀𝐬𝐤: Ask the manufacturer for a PAR map and see the ppfd values. 👍 ⁣

𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧: You buy a multi-bar LED and keep it close to the canopy to maximize light intensity, uniformity and Yield. 💥 ⁣

𝐑𝐞𝐦𝐢𝐧𝐝𝐞𝐫: You are trying to replicate nature on a Sunny day not a Cloudy day. Light intensity and yield have a R2 of ~75% regardless of spectrum. For every 10% in canopy light intensity - you get a 7.5% increase in yield. ⁣⁣
The studies show a linear increase up to at least 1800ppfd (only stopping because the lights could not reach higher). Yes we have customers that push over 2000 with no issues and a linear increase in yield. Just dial in your environment at these levels - very important. ⁣⁣





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