Posi,
How do those LDD 1000's get power - are they wired in series with the COBs on the DC side of your COB driver?
I have a 12v 2.1a dc power supply for my fans. It was only using about 5w so I just wired the LDDs into that supply. The uva consumes about 9w, the far red about 5w. Worked out...