4 ms·Just look in a growing shop. Isn't that what they use?by sva_ 2y agoJust look in a growing shop. Isn't that what they use?genter 2y agoNo, they used HPS. Although now replaced by LED.sva_ 2y agoAh, fair enough. Doesn't seem so hard to find a legit one though. Searching for Philips SOX gets me a lot of results for example.