The difference in brightness at the lesser and greater end of the variable setting is large, though it`s unlikely you`ll ever need to run the light on its maximum brightness as a result.
Aside from this excessive brightness, the only other fault to find with this model is in its temperature cooling system; just 2 fans are built into this model, and they can be quite loud when running.

• Only features 2 cooling fans, even on the longer model, whereas many similar models use 3
• LEDs can be too bright and less aesthetically pleasing if run on their full setting

Depending upon the length and width of your tank, there are two different size Phlizon models to consider, but both are built to the same high standard.
Setting up separate light cycles will not be a problem with the separate dimmer switches, and the sheer brightness of the included LEDs will easily allow you to create intense day and low-intensity night cycles for your tank`s inhabitants.

You may be at risk of burning your coral if you run these LEDs too high, so ensure that you gradually increase intensity over time if opting for these lights.