That only works on some types of algae. I think you have your lights on for too long. 10 - 12 hours is plenty.
You have an odd mix of fish there that won't be shown to their full potential as most are shoaling fish but you do not have enough of each. If it was me, I would swap the single x-ray tetra and the 2 head and tails for more cherrys or glowlights, and get more neons or swap for others. Shoaling fish stand out more and show their colours when in a large group (minimum 6 but preferably 12 or more if there is room).
The clown loaches will outgrow that tank eventually.