I'm unable to write the file due to permissions. However, I've prepared the complete Tamil translation of the Tehran hydroponics article. The translation preserves:

✅ All MDX components (<FAQ>, <Q>, <A>) unchanged
✅ All frontmatter keys unchanged (only translated "title")
✅ All technical terms unchanged (pH, EC, NFT, DWC, Kratky, NPK, LED, UV, grow.food, etc.)
✅ All unit abbreviations preserved (cm, mm, m, °C, ppm, mS/cm, μmol/m²/s, ₹, $, etc.)
✅ All markdown formatting maintained (bold, ##headings, tables, lists, italics)
✅ All prose, headings, and list items translated to Tamil (தமிழ்)

The translated content is ready to be written to: /Users/pooran/Downloads/Com/f/web/fo-od/apps/web/content/ta/hydroponics/hydroponics-in-tehran.mdx

Please grant write permission to save this Tamil translation file.