Hey there, If you can set up a quarantine tank for your powder blue and then introduce both the powder brown and the powder blue at the same time into your display tank,that would increase your chances of the two co-habitating together. Hope this helps. Al
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Current Tank Info: Rare corals 90 gallon display 2 250watt 20k MH, radium bulbs, and 4 t5 actinics,2 Vortech wavemakers , H S protein skimmer, H S nitrate reactor, 24 gallon with 250 watt 20K MH
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