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11/12/2017, 10:47 AM | #251 |
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11/12/2017, 11:24 AM | #252 |
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11/17/2017, 07:16 PM | #253 |
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what is the "closest to actual" outlet sized slip adapter for the 18000? as in what PVC can use use for the least restriction? The answer bounces around from 1.25" to 2" in here. i went off of what amazon said and ordered 1" (since it said 1.25" or 1") seems like its far from true. I probably should have ordered the pump before ordering the PVC but oh well too late now
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11/18/2017, 04:36 PM | #254 |
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A piece of 1.5" pvc pipe will slide into the adapter that it comes with. That's the biggest adapter provided.
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Tanks gone, planning the next endeavor! |
11/18/2017, 09:09 PM | #255 |
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11/27/2017, 09:45 PM | #256 |
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If I wanted 900GPH at 9' head would you run the 10000 or larger?? I have seen the head flow charts, but want to hear from actual users.
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11/27/2017, 10:16 PM | #257 |
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Found this reading amazon reviews
for the 10000, At 44 watts apex flow meter states 390GPH. At max wattage it was 580GPH using 1" pipes, which I am. Looks like I need a larger size. |
11/28/2017, 01:20 PM | #258 | |
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11/28/2017, 02:02 PM | #259 | |
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Even if I ended up with 800 I would be perfectly happy. |
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11/28/2017, 02:24 PM | #260 |
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I'm using this flowmeter:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 I'm not sure if the apex one flows better but I doubt it. You may have slightly larger head in your system than I do which is why Its lower. I would consider adding a second pump if possible and manifold them together for some extra boost. |
11/28/2017, 06:29 PM | #261 | |
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11/28/2017, 06:36 PM | #262 |
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I replaced a Tunze 1073.040 with a DCP-10000 and with the controller set to only 51W I am getting quite a bit higher flow with it compared to the tunze. I have no idea how much head pressure I have though, probably a lot because I only have a 1/2" return due to bulkhead size. Noise level is about the same, different however with the Jaebo making a bit more of a high pitched wine compared to the Tunze low pitched rumble. Both are quiet.
Last edited by dpstrand; 11/29/2017 at 11:59 AM. |
11/28/2017, 06:51 PM | #263 |
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This thread is about DCP model, which is the third generation of the pump and runs dead silent. On my DCP 5000, I know it is putting out the flow as specified using 3/4” pvc. I like the DCP series pump and highly recommend it. I believe someone here on RC tested and confirmed the higher model pump can pump water 20 feet high as per spec with video to prove it.
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11/28/2017, 07:00 PM | #264 | |
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I can always go back to 190W if need be. if this works out I may replace my Iwaki md 15 which is too much for my calcium reactor circ pump. maybe do a DC 2000 dialed back 1/2" application |
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11/28/2017, 07:10 PM | #265 |
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The pipe size used is a major factor in the amount of flow. The larger the pipe diameter, the less work the pump has to do to generate the same amount of flow.
unlike AC pump, which lowers flow as you restrict the pipe size, DC pump can still increase flow by increasing the power. I initially used 1/2" pipe and got the flow I want, about 500gph. Then switched to 3/4" pipe and can see the pump runs at a lower power to generate the same flow. |
11/28/2017, 07:23 PM | #266 | |
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I may make or order a 120 degree 1" Y ,, they are not easy to find instead of a T fitting I have now up higher as explained below. The 1" goes through the floor and up a 2' into a T with 2 3/4" pipes delivering to each side of the tank. May only slow it down a hair. |
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11/29/2017, 07:51 AM | #267 |
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This is certainly not the case. If you ever looked into one of the flowmeters you will see just how restrictive they are.
I have used these pumps without flowmeters before and they are very powerful and come pretty close to their ratings. Last edited by stage3-s4; 11/29/2017 at 12:18 PM. |
11/29/2017, 09:16 AM | #268 | |
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well. Also, I have never seen anybody confirming the flow ratings as, of course, it's tough to do that without a flow meter. |
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11/29/2017, 09:44 AM | #269 |
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can you confirm you are using DCP pump (and not DCS/DCT/DC) and show your test configuration.
The way another RC person tested is using a pvc pipe going straight up a certain length. I think the pvc size is the max size that fits the pump (I think 1 1/2" if I am not mistaken). Of course anything added like elbow, smaller diameter pipe, etc. adds to the head height. Even horizontal run of pipe adds to head height due to friction loss. Last edited by d0ughb0y; 11/29/2017 at 09:50 AM. |
11/29/2017, 11:57 AM | #270 | |
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11/29/2017, 12:00 PM | #271 |
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is it a DCP 5000 or above?
DCP has no whining noise like the previous generation. |
11/29/2017, 12:20 PM | #272 | |
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11/29/2017, 12:25 PM | #273 | |
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And I don't know if they are not. I like the pump but Chinese companies are notorious for false claims. I would be happy to see some evidence one way or another. Capacity and head pressure specs are related but not the same. Sent from my iPhone using Tapatalk Pro |
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11/29/2017, 12:48 PM | #274 |
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There was a major fiasco with tunze several years back where ecotech published a study showing tunze claims for flow is over rated. tunze never denied it.
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11/29/2017, 12:52 PM | #275 |
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I can measure with a 5 gallon bucket and get an accurate gpm rating with no flow meter.
Anyone can measure with a 1 gallon bucket and get a gpm number. 1 sec is 60gpm 2 seconds is 30gpm 3 sec is 20gpm 4 seconds is 15gpm 5 seconds 12gpm 6 is 10 |
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