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What is the NPK for lettuce?

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Lettuce grows very well with 8-15-36 Hydroponic fertilizer with the Ph adjusted to 6.4 for seedlings and 6.0 for mature plants. A general nutrient PPM can be from 560 - 840 depending on the variety of lettuce being grown. Some varieties of lettuce are nitrogen sensitive and can get leaf tip burn.
Craig Witthaus is an artist in White Bear Lake, Minnesota. He has been sailing since he was five years old, and his sailing experience shows in the authentic design of the boats and hydroponics and “set” of the sails in his work. He has settled on oil painting as his primary medium, with a focus on landscapes, gardens and sailing themes. Also we have answers about gardening and hydroponic systems.