its not the chip its the reefer.
I'm not claiming I'm the guru of SPS growth, but it's not as if I've never grown SPS coral.
I find it quite unfair to bash another reefer (in this case myself), saying he' incompetent for not being able to grow SPS under the DreamChip.
As you said:
Dreamchip with a ring of rb/b around the chip.
I didn't have any supplemental lighting and was trying only the DreamChips. My conclusion is that DreamChip by itself cannot sustain SPS growth.