Radium 20K
You could still have a 40 watt actinic for that purpose. I have on both the tanks. They come on before the halides and go off after there on, same at night again.
Only $25/bulb and let them run until there toast. Thats their only purpose, and as mentioned, halides are actually better for morning sunrise, so the actinics only need come on at sunset.
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