Seedling Light Distance Errors | Forum

Young plants stretch toward weak light and burn under strong light, and both mistakes look similar for the first few days. Roughly forty five centimetres from a moderate LED suits most seedlings, adjusted by watching internode spacing rather than trusting a manufacturer chart. Vigour ratings on https://budweedseeds.com indicate which lines shoot up fast enough to need earlier adjustment. A stretched seedling can be buried deeper when potting up, so it is recoverable.