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#5
07-31-2011, 07:03 PM
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Your tank contains 180 US gallons of water. Multiply that by 30 and you get 5400 gallons. To keep high flow demanding stoney coral you want all of the flow that your various pumps and power-heads create to add up to at least 5400 gallons per hour. This is just a rule of thumb but I wouldn't want to be much lower. However you can certainly have more flow than that. Some people have as much as 60x in gph. In your case that would equal 10800gph.
I don't have much experience with T5 so I can't really comment. Do you know what colour temperature yours are? When was the last time you changed out your bulbs for new ones?
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"We shall dive down through black abysses... and in that lair of the Deep Ones we shall dwell amidst wonder and glory forever." - H.P. Lovecraft Old 120gal Tank Journal New 225gal Tank Journal May 2010 TOTM The 10th Annual Prince George Reef Tank Tour 
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