color spectrum<\/a> perceived by humans, plants use more red and blue ranges for growth.<\/p>\n\n\n\nTherefore, high lumen output is not crucial for your plants. Instead, what they need is lights within the PAR range.<\/p>\n\n\n
How to Measure Cost per Micromole<\/h2>\n\n\n
Let’s look at how much your grow lights will cost per micromole (not the total cost of the fixture or per watt). It’s the best way to compare the actual purchase cost of different institutions.<\/p>\n\n\n\n
If a fixture can output 900 micromoles PPF for a $900 price, it’ll translate into $1 per uMol. And if it costs $5000 and outputs 2500 micromoles, it means it’s $2 per uMol.<\/p>\n\n\n\n
Although it’s an effective way to measure LED fixture cost, it won’t tell you the overall price for running the fixture. So, you’ll have to look at its electrical usage efficiency in the long run.<\/p>\n\n\n
FAQs<\/h2>\n\n\n
How can I get PPF from PPFD?<\/strong><\/p>\n\n\n\nPPFD is also PPF but adds the measurement of PAR photons on a specific surface. Hence you can always get PPF while measuring PPFD.<\/p>\n\n\n\n
How many PPF do I need for a grow light?<\/strong><\/p>\n\n\n\nIf one grow light produces about 2000µmol\/s PPF, you’ll need four lamps per growing area.<\/p>\n\n\n\n
What is a good PPFD for a grow light?<\/strong><\/p>\n\n\n\nA good growth light for indoor plant photosynthesis should have around 500 to 700 µmol\/m2. You shouldn’t go over 1000 µmol\/m2 to avoid plant damage.<\/p>\n\n\n