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Been there and got rid of it. Brought it to a meeting in a bag and it would jump trying to bite my hand through it.
I named it the Killer Clown. Eric took it for his father in law. Not sure he likes the guy.
I only ran black box leds. You get what you pay for. Yes, they grow coral just fine.
Personally I don't see the need for expensive lights. That being said I believe there is a difference. I had zoas one time and traded a member. When I saw them under his lights totally different than under mine.
This was the UV I had in the 20g that died. Somehow water went into the unit. Not sure if I broke it the first moving around.
I did pick up a new bulb but that fried and not sure if I did not seal it properly or just no good from original damage.
Any thoughts as this for the seahorse tank...
It beats chemicals. My wife uses MG in the house plants and they look great and are huge. But if she doesn't continue with it they wither and die.
Why I have issues with adding that stuff to my tank, granted its small amounts. Maybe one day will try.