dennis000
Active Member
Hi everyone, read the attached files first. Currently there are many distributors purchased fake 1000w double ended from China, the arc tube inside it just for street lighting not for plants growth. Only real one measured by PAR, ask them how much PAR of the bulbs before you buy. As Philips standard 230v 400w 725μmol/s, 230v 600w 1100μmol/s, 400v 600w 1150μmol/s, 400v 1000w 2100μmol/s.