This is what I'm using except that I've go a Grolux as well to provide a bit of pink which I like. Even without the Grolux those two tubes I think work quite well together with the 840 bringing out the colours of the wood.SteveUK said:I'm going for an 840 Osram 24 Watt, and a Skywhite Osram 24 Watt. Going by James' photos I think this would give a good colour rendition for my woody scape
The last two numbers are the colour figures for the tubes. The 860's are daylight and the 840's have a tint of orange to them. The 835, 830 and 827 have increasing amounts of orange which will work but most people would find rather unappealing, hence why I didn't bother to test them.mlgt said:Is there a comparison with the ranges from 827, 830,835, 840 and 860's?
ceg4048 said:The point of the thread is James giving you an idea of what sort of color cast these bulbs will have and for you to determine what you like to look at. The color casts themselves will have zero detectable effect on plant growth. Osram 840 is a standard bulb that's been used in office buildings for the past 50 years.