I have a 180 gallon SPS display. I bought two tune 6105's, I thought they might not do it for me, but I was way wrong!
Two is more than enough with the 24v electrode installed, tank looks like a torrent on the surface. Polyps are dangling out, I don't think you'll need anything more.
PS- there is no real savings when buying the pump kits, so you can add one at a time if your budget is tight. If you buy both and the controller you save less than a dollar. Lol
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90 gal SPS display+65 gallon mixed reef
GEAR: Korallin calcium reactor, bio pellets, digital aquatics controller, Tunze ATO, MP40, 4 x Tunze 6105 w/controller, Reef Octopus Xp3000 ext, 2x250w MH, Futura LED.
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