I run 400 watt radiums on HQI ballasts but thinking of changing bulbs due to the cost of replacing the radiums every 7 months. So out of the 3 which would you choose?
Have radiums now but I chose to go with Helios on my next purchase.... they have a higher par and heavier on the blue end..... I will be posting pics with comparison when they are put on my tank.... But for right now I have radiums and I do not have one problem with them..... just going to see what else is out there. Helios has higher par, stronger blue violet coloration and spikes higher at 450nm on a PFO HQI ballast per Sonjays site..... but as for experience I have only tried the radiums
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