TEERCSIdbREEDER
Member
400w - 55k initial lumens vs 600w - 88k initial lumens
aircooled-reflector
now im guessing initial lumens means lumen output at the bulb. i was under the impression that a 400w created about 50k lumens at 12inches away and then being about 12.5k lumens at 2 feet away.
either way light still diminished by 75% every foot away. so if i have a 400 at 6-8 inches away, i should be pumping 4x lumens at 6in than 12 inches.
now sometimes right under the bulb ive seen some light bleeching on the leaves. i know that there is a point of no return something like 100w per square foot. so if my 400w is causing some light bleeching there is no way of putting a 600w 6-8in away and not getting bleeching.
so do i keep the 400 at 6-8in away or upgrade to a 600 and keep it 12 inches away? i cant imagine at those distances there being that big of a change in lumen output that reach the plants.
Now this is why i ask..im doing a 18g+ tupperware bucket with like 15 clones (all same strain) in dwc/aero system havent gotten that far yet. so i wouldnt need more than a 3 x 3 print bc theyll be single colas. my light is aircooled so i can place close to plant tops without burning.
Eventually after the first run and with mothers still vegging i will be adding another aircooled light with a different strain running perpetual every 30days. so do i want two 400w hps 6-8in away in a 6 x 4 x 5ft area or two 600w 12inches away?
thanks to all who contribute. the season is beginning and my minds going a mile a minute! peace all
aircooled-reflector
now im guessing initial lumens means lumen output at the bulb. i was under the impression that a 400w created about 50k lumens at 12inches away and then being about 12.5k lumens at 2 feet away.
either way light still diminished by 75% every foot away. so if i have a 400 at 6-8 inches away, i should be pumping 4x lumens at 6in than 12 inches.
now sometimes right under the bulb ive seen some light bleeching on the leaves. i know that there is a point of no return something like 100w per square foot. so if my 400w is causing some light bleeching there is no way of putting a 600w 6-8in away and not getting bleeching.
so do i keep the 400 at 6-8in away or upgrade to a 600 and keep it 12 inches away? i cant imagine at those distances there being that big of a change in lumen output that reach the plants.
Now this is why i ask..im doing a 18g+ tupperware bucket with like 15 clones (all same strain) in dwc/aero system havent gotten that far yet. so i wouldnt need more than a 3 x 3 print bc theyll be single colas. my light is aircooled so i can place close to plant tops without burning.
Eventually after the first run and with mothers still vegging i will be adding another aircooled light with a different strain running perpetual every 30days. so do i want two 400w hps 6-8in away in a 6 x 4 x 5ft area or two 600w 12inches away?
thanks to all who contribute. the season is beginning and my minds going a mile a minute! peace all