A lighting question
Now that I have seen a radium bulb in action I would never go back to Iwasaki unless it is for a grow out tank. The Radium bulb really suits a deep hex tank since you don't need any supplemental actinics. This makes lighting simple. I am not sure if you can orient the bulb vertically but you have enough width for a horizontal bulb pendant. And since the radium bulb is really strong in the blue end of the spectrum I found that the light disperses better across and reaches deeper in my tank than the Iwasaki.
Good luck.
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