Lighting WPG problem.
I have a 7 gallon rimless cube and I am really confused on what lighting I should choose.
Mainly because lots of information says you need at least 1.5 Watt/Gallon to achieve medium light.
This means to achieve medium light I need to get a 10+ watt light.
BUT most finnex led light(fudgeray, planted+) fit to my tank (11.9*11.9*11.9) are less than 5 Watts.
What should I choose?
Does this 1.5 Watts/Gallon rule apply only to fluorescent light or also on led light?
I am really confused, thanks for anyone who helps.