Although Sansi gave me this light for free to try, my review is honest and unbiased.
Also, I get commissions for purchases made through links in this post. This is at no extra cost to you and helps support my site and YouTube channel.
Sansi sent me one each of their 15w and 30w mixed full spectrum grow lights. These lights appear white when on, instead of purple. I tested the power draw and PAR readings of each one. They are currently offering a 20% discount using the code LIKEASUN. The offer is good through 5/31/18. These can be purchased at Amazon.
I plugged these into my kill a watt tester. The 15w pulled 15.3 watts. The 30w only pulled 23.7 watts.
At 12″, both lights were around 260-270μmol/m2/s. At half that distance the 30w model was a little stronger than the 15w at 1100 μmol/m2/s and 1000 μmol/m2/s respectively. The light spread on the 15w model is more focused and defined. Whereas the light from the 30w is more diffused.
I have the lights setup over established Holy Basil plants. The nutrients I am using are Masterblend, Epsom Salt, and Calcium nitrate. The strength is around 650 ppm/1.3 EC. The pH is 6.3.