What other light should I buy to supplement my 300W LED?

[28 Grams]

I have a 300W LED Light for my 36x20" grow tent, that's 3x1.66' or 5 square feet.

I feel like my 300W gets the job done but my plants could benefit from more light... I wanted to keep it cheap I was thinking of getting a 300W Mars Hydro, or just a bunch of CFL's... any suggestions?

 

[Mars Hydro]

August is Mars-hydro shopping festival,you can check more lights on our official website.