led bulbs are they good to grow coral?

[MaxJ23]

I am planning to get these type of cheap of LED bulbs to supplement my current lighting in my tank. Mainly to light up the dark spots. Are these good to grow corals? Anyone using or has used these? Thanks!

 

 

 

Sent from Singapore Reef Club mobile app

[Otaku Reefer]

never use b4, but corals are not cheap stuff, not worthwhile if these lights affect their growth or outright bleach them, probably can use as refugium light. just my 2 cents.


Sent from Singapore Reef Club mobile app

[SubzeroLT]

I've measured PAR on these lights before. Light is very focused with hot spots within a small area. IMO, not useful for corals at all. 

OK for growing macroalgae but note it has hotspots as well. There are better light options out there. The key is good light spread.