The primes definitely have issues, but as a stand alone for the OP, I think they are a better option than 1 grow and 1 glow. All that said, I will be upgrading the Primes in my T5 hybrid fixture with Reefbreeders Meridian 11's in a few months.
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Lol. I ended up taking the mesh guards off mine, which helped but still had to kickstart the fans manually now and then. On happier news, I've cleaned mine, taken the lenses out completely and retrofit them (without lenses) to my current lighting setup at 7000K (was gonna buy floodlights, but changed my mind). I've angled the lights in to exaggerate the glimmer. #bringtheshimmerback :)So I believe I actually cursed myself by responding to this thread. The fan on one of my Primes is starting cr@p out. it's making a ton of noise. I might have to replace them before I want to. Reefbreeder meridians here I come. I just ordered a par meter so I don't fry up my corals when I make the transition.
I have a prime on my 15 gallon 18" width tank, its a good light but has a very narrow spread of light, it doesn't light the ends of the tank well. I keep mushrooms on the ends of the tank and they do reach for more light - my prime is on 75%.
Quick question- I bought one each of the 12in blade glow and grow.
The tank is roughly 18inches cubed. What intensity should I target? Going for bubble tips and low-medium light corals for now.