Flowering, Do they need Blues ??

[budfarmer]

When flowering do you need any Blues at all ?? I notice my plants yellow out and die off during flower mode this is natural I know but would some Blue slow this down and allow more flower production ? I'm thinking the HPS only may be accellerating the yellowing and die off of leaves but at the same time adding some blue spectrum might also make smaller flowers ?

any info appreciated !

 

[Thzznation]

the sun has both man. this leads me to believe both would be better. i use blue spectrum all through flowering. at bare minimum i use it durin the first few weeks of flowering. it keeps the stretching to a minimum and keeps the nuggs alot tighter. not smaller, just tighter. i throw some uvb bulbs in too man. your girls enjoy all kinds of light.