refective covering below canopy

gottaloveplasma

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I noticed lots of indoor grows where they take a sheet of reflective material and laid it over the pots. They cut little slits in the plastic for the stems. Is this beneficial at all? What application would this be usefull for.
 

kaotik

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stop the soil from drying out as fast (from light and airflow) or the light from hitting the hydro res.

i do a similar idea outside; place a bunch of hydroton rocks on the top of my soil so the sun don't scorch it.
:)
 
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