I would probably say reactor also. Personally I stopped using carbon about 4-5 months ago, and can say I am having much more success now. With the SPS issues I have had over the past while, at least they are not dieing anymore, and can see some healing happening. So for now, no carbon for me, water is crystal clear and inhabitants are still happy.
Running LR rubble in sump to skimmer, with cheato refuge, then through Purigen before return to Display.
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Setup: 180G DT, 105G Refuge (approx. 300lbs LR, 150lbs Aragonite)
Hardware: Super Reef Octopus SSS-3000, Tunze ATO, Mag 18 return, 2x MP40W, 2X Koralia 4's Wavemaker
Lighting: 5ft Hamilton Belize Sun (2x250W MH, 2X80W T5HO)
Type of Aquarium: mixed reef (SPS & LPS) with fish
Dosing: Mg, Ca, Alk
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