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Old 09-15-2005, 03:03 PM   #11
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Right now I have two power heads in the tank rated at 300gph(supposedly) anyway at this point I just want to get rid of the Rena because its the smaller of the two and when I pick up another 30 or 40 pound of rock then get rid of the other... The idea of not having a filter in there is hard to get use to...
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Old 09-16-2005, 10:45 AM   #12
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Right now I have two power heads in the tank rated at 300gph(supposedly)
You will need something else then. Flow in a SW tank should be 10x the tank water volume at minimum, more preferabley. Mine is just over 20x

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The idea of not having a filter in there is hard to get use to...
You will and most likely also come to appreciate the less maintenance required over the long haul. My tank runs with a skimmer, powerheads and LR, nothing more.

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Steve
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Old 09-16-2005, 12:31 PM   #13
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Steve, will you be my mentour until I get this setup???? Please??? Im still building my sump/refugium, I have the weir built, all I have to do is buy a pump (any recommendations?) and plumbing to get the water to the sump and back...
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Old 09-16-2005, 09:55 PM   #14
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all I have to do is buy a pump (any recommendations?)
Depends on the capacity of the overflow you get. Also what the vertical height from the bottom of the sump to the top edge of the tank is. Will it be split off or a single return supported by additional powerheads. Are you considering a closed loop instead for additional flow instead of the powerheads.

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Old 09-16-2005, 10:17 PM   #15
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Quote:
Originally Posted by steve-s
Quote:
Originally Posted by reefbound
all I have to do is buy a pump (any recommendations?)
Depends on the capacity of the overflow you get. Also what the vertical height from the bottom of the sump to the top edge of the tank is. Will it be split off or a single return supported by additional powerheads. Are you considering a closed loop instead for additional flow instead of the powerheads.

Cheers
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I've built my own overflow following directions from Melevsreef. The vertical hight is 3'ft 10"inches, I would like to split it so I can have flow on both sides of the tank,And no I have not consider the closed system.
The two pumps I was looking at are the Mag 7 & 9...I was also going to keep the return at 3/4 instead of 1" and the drain down to the sump 1"inch.
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Old 09-16-2005, 10:37 PM   #16
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I've built my own overflow following directions from Melevsreef.
Would love to see a pic when your done. You might want to confirm this with him but I don't think you'll get much more than 750-800 GPH though a 1" bulkhead. This would put you at the bottom end of the desired flow rate for your tank with the sump return as your sole source of flow.

Quote:
The vertical hight is 3'ft 10"inches, I would like to split it so I can have flow on both sides of the tank,And no I have not consider the closed system.
The two pumps I was looking at are the Mag 7 & 9...I was also going to keep the return at 3/4 instead of 1" and the drain down to the sump 1"inch.
A MAG 9 split off will get you about 700-750 GPH back to the tank (best scenario). So with one overflow, one return pump and two return pipes, I would plan for variables and go with a MAG 1200 or Iwaki MD30RLXT instead and add ball valves to each return. This will allow for the most flow and control so it won't overflow the tank and you won't fall short of what the overflow can handle. Too little flow and you'll lose the siphon, too much and you overflow the tank.

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Old 09-16-2005, 11:54 PM   #17
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Would love to see a pic when your done.

Here is my homemade overflow and my sump/refugium...The overflow just finished leak testing and passed as did the refugium although it leaked in three places so I reglued and now its outside for a night of curing. As for the single line down and a mag 7 I have to go with the budget right now,I can and will add a second line down and then get a larger pump and maybe use the mag7 in a closed loop...
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Old 09-17-2005, 11:54 AM   #18
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I think I may be missing somthing. When the water comes down the overflow into the 4"inch x 4"inch chamber that will be filled with LR rubble then it will drain into the Refugium part that contains 20lbs of live sand and a few more lbs of live rock then its over and under the baffles to the return, Help me understand what clarifies the water making it clear,what pulls the floating debris out of the water with no mechanical filtration other than a skimmer? am I missing somthing?
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Old 09-17-2005, 09:03 PM   #19
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When the water comes down the overflow into the 4"inch x 4"inch chamber that will be filled with LR rubble
Personally I wouldn't recommend that, too much chance for blockage and reduced flow. It's asking for floods.

Quote:
then it will drain into the Refugium part that contains 20lbs of live sand and a few more lbs of live rock then its over and under the baffles to the return,
You don't want the overflow draining into the fuge portion of your sump. It wil create a nightmare for the water clarity/quality. Place it in the middle separated by baffles.

Looks something like this...
http://www.angelfire.com/ok/dog1/sumps.html

Quote:
Help me understand what clarifies the water making it clear,what pulls the floating debris out of the water with no mechanical filtration other than a skimmer? am I missing somthing?
The baffles are the main thing that helps "settle" debris out. You can also use a filter sock/pads under the pipe from the overflow to catch it. Carbon will also help a fair amount. With a "planted" refugium in the middle, it will also help remove debris.

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Old 09-19-2005, 09:49 AM   #20
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Quote:
Originally Posted by steve-s
You don't want the overflow draining into the fuge portion of your sump. It wil create a nightmare for the water clarity/quality. Place it in the middle separated by baffles.

Looks something like this...
http://www.angelfire.com/ok/dog1/sumps.html
but without the bioballs pictured in that link...(?)
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