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...super interesting, as I believe they are part of the explanation for a lot of what we see in today's reefing. Thanks for a brilliant experiment #jda I do have a question. If aragonite is so good at binding phosphate, isn't there a risk that it will also bind other nutrients and trace...

...just go from 250W HQI, or to 400W SE, or to 400W Radium, or to 250W Phoenix lol. It's fairly straight forward but a little research is involved to match bulbs to ballasts. Hamilton is a great resource and can clear up a lot of questions. Has #jda been here? He knows this stuff inside and out.

#jda

...I'm certainly not looking for a blue windex tank, not a great look in my opinion lol. The Geisemann bulbs I can maybe get but at a price and I really dont think I can do better then the Phoenix 14k bulb. #jda how long are you running your Phoenix 250w bulbs before changing out? Thanks again

#jda thanks for the great input. I know you are testing the par too with these bulbs so I appreciate the reply. Less par doesnt sound too much fun. Have you noticed your Phoenix bulbs shift color at all as they age? I'm running one that's a year old on a new setup so its empty of coraline...

Been running 14k Phoenix 250w bulbs for a while. Was wondering if anybody has ran the Hamilton 250w HQI 20k bulbs or other 250w HQI bulbs and could compare them to the Phoenix bulb in terms of color, blue or white or close. Maybe #jda ? Thanks in advance