6040-F2525 A1 COB: Legit or cheap knockoff?

Like I said, they are cheap, but if they are the same design as the ones I use you can’t expect much, I only paid $2 a piece for them 5 years ago :rofl: but I’ve not had cooling issues with them.

I have 3 of the 5500k ones I’ve been using for years over a shelf in the nursery and not had to replaced them. It surprises me that the water blocks wouldn’t cool them, and maybe the ones picture by the OP do flicker, but they ”look” the same as the ones I got. If they do flicker, that would generate more heat.
 
Hello, I have just read all of your posts or almost. I wanted to get news of the plants and what they are like with your homemade lights. I am starting to grow them and I am hesitating to do so. Thank you.
 
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