I use this led over a hangon refugium with chaeto macro algeas. The tank is a nano SPS only. The chaeto grows perfectly

Trylly not impressed. Light is not bright. For fish is perfect.
But if you want plant you shoud buy 2-3 for 20 litres tank.

The light functions well but I would need two for my 26l nano. The light is in need of a purple and some blues if it is to look as good as the PC bulb.
If you just have fish then this will be fine. Very bright for it's size.