Borrowed a friends par meter to do some reading on my tank and see how the A8/X30 lights perform and I am a bit disappointed at the numbers. This is a 4ft Waterbox 110.4 tank, I have 2 X30 blue lights mounted 8 inches above the water. I was running at about 60% (60% blue, 30% white) prior and the par measurements were BARELY 200 at the top and everywhere else was hovering at around 150-175. I bumped the intensity to 80% (80% blue, 40% white) and measured the par again and the result is shown at the below.
Honestly I was hoping for a lot more from a combined 430W total light. The 3x K7 Pro V2 @270W combined I had before with the 90 degree lens was able to throw a lot more light into my tank and the par readings shows it, from anywhere between 300-450 at the top half of my tank. The stock 120 degree lens creates too much light spillage and spreads the light too much. Sure, it creates a nice even blanket of light all across my tank, I need to crank the power all the way up just to be at the bare minimum par level for my needs.
I ordered the high intensity lens kit from Ecotech which hopefully helps in focusing the light into my tank and increasing the par levels. Will report back once I have it and tested it