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Old 11-20-2011, 06:50 PM
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When someone refers to a turnover rate (eg. 50x) they mean 50 times the DT volume, so for your 75g tank you would be shooting for 3750gph total flow rate (including return pump, powerheads etc.)
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Old 11-20-2011, 07:04 PM
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think "tidal wave"......50xs+ for sure.....i run close to 100xs
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260g mixed reef, 105g sump, water blaster 7000 return, Bubble King SM 300 skimmer, Aqua Controller Jr, 4 radions, 3 Tunze 6055s,1 tunze 6065, 2 Vortech MP40s, Vortech MP20, Tunze ATO, GHL SA2 doser, 2 TLF reactors (1 carbon, 1 rowa). http://www.canreef.com/vbulletin/showthread.php?t=50034 . Tank Video here http://www.vimeo.com/2304609 and here http://www.vimeo.com/16591694
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  #3  
Old 11-20-2011, 07:07 PM
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I also run over 100's x
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras



360 Reef Tank
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  #4  
Old 11-20-2011, 07:42 PM
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Ok, so with my 75g and let's say 25 g displacement for rock and livestock I have approx 50 gal. So to get to 50x I need to get to 2500gph? I just want to make sure before investing in power heads
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Old 11-20-2011, 07:56 PM
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Not sure about everyone else.....but I've never deducted out water displacement for calculating turnover rate. Like jostafew said I'd use 3750 as a base......if not higher
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90 Gal mixed reef with a custom 40 gal sump, SWC Mini S skimmer, 8X56 Watt fan modded Tek, 2x2LF reactors, mag 12 return, Tunze ATO and a modded Tunze 6100 running on a DIY wave controller
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  #6  
Old 11-20-2011, 09:51 PM
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This could be important. Any advise?
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  #7  
Old 11-20-2011, 11:30 PM
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I don't know. Technically I should not be able to keep any SPS judging from everybody requirement on flow, but I do keep them successfully and they grow fast too, and I bearely have any flow. I have 2 Koralia Evolution 1050 in my 75 gallons on each side, pointing at each other. There is only a gently flow and some SPS bearely move their polyps, yet everything as been growing steady for almost 2 years now. Birdnest, acropora, pocillopora, montipora etc...all grow well and have great color.

If your water is good and the corals have good plankton and food in the tank to feed on, they will grow even if you don't have the best flow. So it's probably good to have higher flow, but when I tried to put the powerhead more directly at my SPS they retracted their polyps and did not seem to like it.
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