LED experience for under $2

[Milad]

Most people put a pane of glass between the LEDs and tank to prevent salt creep and getting them wet. Acrylic works too but it can sag.

You can also mount the LEDs more than a foot above the tank and there shouldnt be any salt creep/wetness.

Is your friend on canreef? Which LEDs did he get? You may have been spoiled by the new XM-Ls, they are inhumanly bright.