I bought 50. I would have bought more, but had already bought 100 H-Series strips. I've made a few 4000K F-Series frames already and they work really well as veg and seedling lights. I'll probably work something out with
@Grow Lights Australia to see if we can come up with something to put on his site. A lot of people just want to buy plug-and-play these days, but with cheap strips, a bit of ally and a bit of labour we can probably come up with some decent frames for a 2'x2' at a reasonable price.