I have a 2 gallon aquarium I am going to be setting up as an NPT (natural planted tank) housing red cherry shrimp - I know the most important factor in setting up an NPT is getting the correct lighting.
I understand lumens, kelvin and such but I am at a loss as to what wattage the bulb should be. I have been looking at aquatic plants all day trying to decide which ones I am going to order in the hope that this would help me understand what wattage I need but it unfortunately has not.
I have a 25watt CFL (colour spectrum 6500k) and appropriate lamp that I was going to use but I am concerned that this will be too powerful for a 2 gallon aquarium. I have searched for lower wattages and initially wanted a 15watt CFL but the only 15watt bulbs I can get have to be bought in bulk - and it isn't cheap. I've also spotted 11watt CFL 6500k bulbs but I do not know if these will be powerful enough. I've done research but can't for the life of me get to grips with what wattage I need.
As mentioned I am unsure of the species of plants I'm going to be using in the aquarium but am looking at the following: