Try 1.5 to 2 wpg. T5 compact fluorescents @ 6700k on a 10/5 hr. split cycle. 1/2 dose EI. GH 5 and KH 4. Here's the trick...You'll want to 2 Farlowella Acus, 3 SAE's, 6 Otocinclus, 2 corys, 10 Amano shrimp, and 20 Red Cherry Shrimp. Mind you this livestock is per 20 gals !
As with all things your mileage may vary...

Good Luck, HTH. Prof M