Using ebay cob for house plants (failed)

[Roost]

I had all the parts laying around so I thought wth. Unfortunately this Chinese 50w cob gets too hot. Next plan is to put in a Cree cob of sorts. Also I couldn't find a good way to ground it, so back to the drawing board.

[Labgrown]

These work very well for cheap cobs; especially the weird rectangular form factor cobs that come out of china.

[Roost]

I seen some par readings on those large rectangle cobs, they seems to do alright if not driven hard.

Some more research on the "mains" cob I have and it appears to have temperature limiting. No issues yet (close eye on it).

[TEKNIK]

Those large rectangular COBs are usually made by crappy companies in China. Stick to the major brands for COBs when possible.