?? on buying, a 10k 250 HQI and a dual ballast 400watt

[Trae]

Any body have a great source for the following.

250 watt 10k HQI Pendant
Dual ballast 400 watt 10k or 20k XM
Calcium or Calk reactor

Looking at buying the PFO-HQI250SYS from Premium Aquatics (or thru Jim).
No source yet for the dual 400 (lost my info)
No source for reactor or which is better.

Thanks,
Trae