Dr.meter LX1330B Digital Illuminance Light Meter, 0-200,000 Measurement Range Lux Meter, Lighting Intensity Brightness Measurement for Indoor Outdoor, Light Meters for Plants

Okay, I would recommend getting a light meter before we go guessing on how many lights you do or don't need Dr.meter LX1330B Digital... https://www.amazon.com/dp/B005A0ETXY?ref=ppx_pop_mob_ap_share