Comment to 'what does the plant use in order to stretch (Nute wise )'
  • the 450 watt is the sf 4000 big difference between the 2 lights...the 1000 is probably running @ 100%...I have the sf 4000 and have never been able to  run @ 100% without going way over the ppfd maximum...

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    • the 1000 is running at 20% 300ppfd

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