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when to switch from 4k veg light to 3k

docholidaystarted grow question 5y ago

I have 7 3 week old plants under 165 watt of 4k quantum boards. They seem to be stack tight. my question should I switch them up now to 3k 240w light to get a bit more height... or what I think I should do, be patient veg them 4 full week under 4k then veg a week or 2 under 3k.

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Mrs_Larimaranswered grow question 5y ago

If you want to have more internodial distance, give more distance to the plants, or dimm your light. those quantumboards are very powerful I start my grows with awide distance, and come closer later...... and yes you can grow them with " smaller lights" too Ive started my plants for along time under 2x26 watt Led, for around 20 days. Girls growing well and looking great

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