woofie said:Do a search on Amazon for "greenhouse light meter". There appear to be a BUNCH of them!
I saw that
It makes it hard to know what to choose. The big box stores have some, too.
I'm hoping to find out who has brands/models that they use, they like, and that work. (I nearly bought a light sensor last year from a place and it showed the same readings when I put it in a dark area as when it was in full, bright lights...I promptly put it back on the shelf.)