Acan 600PA-18B x2 or reefbreeder photon16 x2 for 75g rimless?

I already have the photon16s was wondering if the Acan would be an upgrade. Someone is selling locally for $415...
 
What do you mean? Acan 600PA -18B will only light half? I have a 75g deep blue rimless btw. Contemplating on buying two acan 600PA -18B for $415. Or should I just stick to the photon16s I already have?
 
Ok, I missed that you'd be getting two of them. Again, you're still moving from one chinese light to another that runs with less power and having less output. Not worth it.
 
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