Plants for 20g

[ldaniel]

If you are intrested in learning more about lighting here is a link that has helped me out a bit.
Aquarium Lighting; Kelvin, Nanometers, PAR, Bulb, Watt, MH, LED, Light Basics.

 

[ldaniel]

Sorry but I didn’t finish reading the newest posts; you will not need to add any ferts until you get the lighting into the med - high light range. I would not waste the money. IMO, if you add fert's to a low light tank, as yours is, you will do no good but do more harm by giving excess nutrients for Algae.
If you are still interested in Fert's then here is a different link.
Welcome to Rex's Guide to Planted Tanks