Black and white sheeting or mylar

 

The big debate – do I use mylar sheeting as above or plain B&W sheeting?

Although on paper, mylar is more reflective, B&W is also reflective to a degree.

I would anticipate 10-15% increase in illums with mylar.

But with this you have to weigh up some factors :

- cost of mylar versus B&W sheeting or just plain white walls

- mylar will give you a headache if you’re in the grow room too long

- do I really care about the lower flowers getting much light?

Personally, I think B&W sheeting is the most effective.  You best investment is maintaining your hydroponics system impeccably and changing your bulbs regular.