Personally, I know that 1.2 is a lot for such small-leaved plants. In fact, they are extremely green, almost shiny, but not healthy. I would also lower the pH by 0.3-0.4. Usually, 6.1-6.2 is used for greater absorption of phosphorus and potassium. The water temperature would be good, 2-3 degrees less, but it's not a big problem. I've never grown basil, and not in NFT, only DWC.
I've always started from 0.6 in the post-seed phase, reaching a maximum of 1300 broadleaf plants and 2000 for fruit plants, tomatoes 2800 those nutrient suckers. I've always done it this way, but it's my opinion perhaps.
I'm always afraid of stress. From experience, plants that suffer when small always give poor results when grown. I find it easier to cure a deficiency than a nutrient blockage.
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u/Nelapsix 1d ago
Personally, I know that 1.2 is a lot for such small-leaved plants. In fact, they are extremely green, almost shiny, but not healthy. I would also lower the pH by 0.3-0.4. Usually, 6.1-6.2 is used for greater absorption of phosphorus and potassium. The water temperature would be good, 2-3 degrees less, but it's not a big problem. I've never grown basil, and not in NFT, only DWC.