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Old 10-19-2013, 08:03 AM   #291
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Awesome grab! Sounds like the sharp things on the rock are barnacles 2nd pic is a dosing pump 3rd pic is a battery powered bubbler The ballast are for the VHO 6ft tubes. I see a nice timer for the lights too The skimmer im not sure on how tall is it? Overflow what size are the drain tubes?
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Old 10-19-2013, 08:39 AM   #292
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I was just looking at the overflow holes a little while ago and it looks like the pvc is 1/2 inch out and 3/4 inch for the in. Thats kinda small isnt it? My 90 is 3/4 and 1 inch......

I need to get new bulkheads too as we had to cut off two of the connections. lol
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180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.
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Old 10-19-2013, 09:34 AM   #293
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If those bulbs are 1" diameter then they're t8 if they're 1.5" then t12. T5 is 5/8" t8 are 8/8 etc.. I would've thought the 180 would have 1.5" or at least 1" for overflows I wonder if you could bush up to 1.5 if so use the mag18. Ive read 1" drains can withstand up to 1200 gph each with just gravity. Oh and by the way, you got the deal of the century!
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Old 10-19-2013, 05:49 PM   #294
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I think I solved the size of the plumbing, lol, the guy used reducers on the return lines so they are 1/2 inch but the original opening is 3/4. I think the same of the input plumbing. Not sure why someone would reduce the output seems like a waste to me. lol I willhopefully be getting new bulkheads this week and will run them as they are with no reducers. This also leads to which return pump to use? The mag 9.5 that was in it or the brand new mag 18 I have? Its pretty much double the output.

Got the sump and the stand today and cleaned up the sump. The guy used what looks like a 40B and made his own baffles, theres even an extra baffle I think. Here are the pictures



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180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.
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Old 10-19-2013, 07:11 PM   #295
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Those overflow drains are small it will only drain around 1200 GPH combined To safely drain 1800 GPH you'll need a 1 inch id pipe on each drain
Using the following input parameters

Gallons per Hour = 1800
Drain and Overflow sizes are calculated as

Recommended minimum drain pipe diameter = 1.75 inches
Recommended minimum linear overflow size = 27 inches
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Old 10-19-2013, 08:18 PM   #296
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I think the inputs hole is 1 inch. Does that still put me at 1200gph max? i have been trying to figure out where an extra mag 9 came from, and I think the guy was running dual pumps, one for each return. lol I didnt take apart that part of the setup so no way to know for sure.
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Old 10-20-2013, 09:16 AM   #297
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I would think so, with the OD of the pipe being 1 in. that puts the ID at about 3/4 I would set things up for the mag 9 Maybe the second was a spare, Or one of them could be bad?

You could always set everything up and try the 18 If it pumps the return area dry then you'll know it's to much for the overflows
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Old 10-20-2013, 11:38 AM   #298
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There's a group buy in R2R for those dc pumps I just joined the gb maybe you can try one of those I'm getting the 9000. They are doing the wp's also just a heads up.
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Old 10-20-2013, 03:02 PM   #299
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This site has a chart that tells you flow capacity of PVC pipes. According to this 1" sch 40 PVC will drain up to 960 gph with gravity. I really wouldn't worry about the 18 being too much bc you will have at least 300 gph of head loss, more with any elbows, unions, or ball valves. One other thing you need to account for is overflow box linear coverage as grizz previously posted. Also if the 18 is too much I would still use it just add a t onto the return line w a ball valve going back to the dump in area. I hate low flow I have a 75 with a 7 on it and wish I did at least a 9.5 maybe even a 12.

flexpvc.com/WaterFlowBasedOnPipeSize.shtml
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Old 10-20-2013, 04:07 PM   #300
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my 125 has 2-1" drains on it. because my tank isn't 100% level, the right side drain is running on full syphon and the left drain picks up any slack. although the single 1" cant handle my mag18, its pretty close. id def run the mag18 and t it off like previously mentioned.
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