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07/14/2015, 03:18 PM | #8551 |
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07/14/2015, 05:02 PM | #8552 |
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Beats me but I'm willing to try anything at this point.
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Quitters never lose. [QUOTE=CStrickland]Who gets mad at a starfish?[/QUOTE] Current Tank Info: 75g DT, 30G refugium, 10g chaeto tank, 50g stock tank basement sump |
07/14/2015, 05:08 PM | #8553 |
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07/14/2015, 05:41 PM | #8554 |
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anyone?
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07/14/2015, 06:24 PM | #8555 | |
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Quote:
I think in the three hundred or so pages in this thread this is the first time that the siphon drain could not keep up with the return flow. |
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07/14/2015, 06:26 PM | #8556 | |
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Quote:
Also, where do you have the valve for your siphon? If you have it up top, the negative pressure caused by the siphon can cause the viny tubing to collapse
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~~~~~~~~~~~~~~~~~~~~~ 120 gallon, coast to coast overflow w/beananimal overflow. Waveline DC 10000 II return pump, 40 gal sump, Octopus XS200 skimmer, T5 lighting |
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07/14/2015, 06:30 PM | #8557 | |
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It depends on your flow. You don't have to have the external box be coast to coast, but you do need enough holes/area to allow the water to flow relatively unimpeded The holes should be about at the same height as the water level which is set by your plumbing Bulkheads do nothing to strengthen the glass If yoour external box will be glass, make sure it is large enough to drill the holes without compromising the integrity.
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~~~~~~~~~~~~~~~~~~~~~ 120 gallon, coast to coast overflow w/beananimal overflow. Waveline DC 10000 II return pump, 40 gal sump, Octopus XS200 skimmer, T5 lighting |
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07/14/2015, 06:49 PM | #8558 | |
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Quote:
Sigh. I'm going to have to replumb this aren't I?
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Quitters never lose. [QUOTE=CStrickland]Who gets mad at a starfish?[/QUOTE] Current Tank Info: 75g DT, 30G refugium, 10g chaeto tank, 50g stock tank basement sump |
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07/15/2015, 04:07 AM | #8559 | |
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07/16/2015, 03:14 AM | #8560 | |
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Quote:
2) You don't want any bulkheads in the holes. It will restrict the communication between the internal and external boxes. This is just one of the potential issues with the "ghost overflow" line of thought, that requires such bulkheads to hold everything together. One body of water, with waterline at the hole center line, is what you want. 3) The dimensions of the boxes, depends on the size of the pipe/fittings. It also depends on having the proper height differences between the inlets to the standpipes. Essentially, the tops of the down-turned elbows will be just a bit above the waterline. (slight variations.) So the final practical dimensions are up to you to determine, by measuring the plumbing etc, so everything ends up where it needs to be.
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"Things should be made as simple as possible, but not simpler." (oft attributed to Einstein; most likely paraphrasing by Roger Sessions; compactly articulates the principle of Occam's Razor) Current Tank Info: 325 6' wide Reef |
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07/16/2015, 04:00 AM | #8561 | |
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1) Your pipes are too deep in the sump. They need to be less than 1" below the surface of the sump. Any more than that creates the need for greater head pressure to purge the air out of the siphon line. 2) The air vent line is to low in the overflow box. If it is too low, the open channel will trip to siphon, before the siphon has a chance to purge the air. If the water level does not make it to the top of the dry emergency, there will not be enough head pressure to start the system, and hence the open channel takes all the flow. That is the acid test. The air vent line inlet needs to be above the inlet to the dry emergency, 3) Horizontal runs in the plumbing can cause the siphon to air lock, and the open channel takes all the flow. 3) Less common problem, is the bulkheads being too large for the flow rate. If you have 1.5" bulkheads, and 600gph (just a random low flow number) the system will not start, and the open channel takes all the flow. 4) Vinyl tubing is a poor material to use. The fittings are restrictive, just for one. If you need "flexibility" then spa-flex is the material to use. Quite honestly, there should be no need for flexibility, as a little thought can usually solve most routing problems. Invariably, with start up issues, it is a problem with the implementation. How it was put together. Using a fine tooth comb, and going over the implementation, will solve the issue. ********************************************************** Topic Change: In this post http://reefcentral.com/forums/showpo...postcount=8530, (no reflection on the person that posted it) the dry emergency is way to low in relation to the other two standpipes, and the water level has no place to rise. It is a certain recipe for a failed system. I have stressed this in the past, but I will go back to it again: you cannot stuff this system in a tiny box, and expect it to work the way it is supposed to. It may drain water, but it will not work the way it is supposed to. I have run too many tests on "jamming" it in small boxes. This system functions on head pressure, not miracles, and the setup in the cited post, will not get any head pressure on the siphon.If you look back a ways in this thread, I posted a link to a video that shows how high the water level needs to get to start the siphon, the right way. I am not enthralled with the internal/external concept, and I built it over 5 years ago. It works well, but was a waste of time. I don't think the "need for minimal footprint" should outweigh the need for performance, and the "small" internal/external setups (aka "ghost overflow") are self defeating, and a considerable step backwards, performance wise. What should come first is the needs of the system, not aesthetics; the "ghost overflow" is no more aesthetic than an original design BA, but from what I have seen, the original design BA out performs it.
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"Things should be made as simple as possible, but not simpler." (oft attributed to Einstein; most likely paraphrasing by Roger Sessions; compactly articulates the principle of Occam's Razor) Current Tank Info: 325 6' wide Reef Last edited by uncleof6; 07/16/2015 at 04:03 AM. Reason: added blurb on vinyl tubing... |
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07/16/2015, 08:41 AM | #8562 | |
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Dave |
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07/19/2015, 05:25 PM | #8563 |
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Wondering if anyone has tried this before. I currently run a Bean Animal drain. I wanted to try to get more turn over in the tank. If I add a gate valve to the secondary drain and turn it into Herbie would there be any reason that comes to mind that it wouldn't work? Once I know that more turnover in the tank would remedy some of the issues I am having then I would consider re-drilling 3 more holes to setup another full Bean Animal system. I just don't want to do it if there is any reason that I am not thinking of at the moment that will cause it to not work properly.
Thanks, Adam
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07/19/2015, 07:44 PM | #8564 | |
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Quote:
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Quitters never lose. [QUOTE=CStrickland]Who gets mad at a starfish?[/QUOTE] Current Tank Info: 75g DT, 30G refugium, 10g chaeto tank, 50g stock tank basement sump |
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07/19/2015, 08:11 PM | #8565 |
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I'll be drilling my tank for the external Bean design this week, and was hoping someone could answer two quick questions for me:
1) Will two holes in the tank draining into the box be enough or should I have three? 2) Is there a set size for dimensions of the box? Or can I make it whatever size I want? Thanks! |
07/19/2015, 10:21 PM | #8566 | |
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~~~~~~~~~~~~~~~~~~~~~ 120 gallon, coast to coast overflow w/beananimal overflow. Waveline DC 10000 II return pump, 40 gal sump, Octopus XS200 skimmer, T5 lighting |
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07/19/2015, 10:28 PM | #8567 | |
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If I read your post correctly, you are talking about running a full siphon (presumably wide open,) a 2nd full siphon dialed back with a gate valve and a dry emergency? Doing this eliminates one of the failsafes of the system, so I can't recommend it. Unless you have significantly undersized bulkheads, flow shouldn't be an issue.
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~~~~~~~~~~~~~~~~~~~~~ 120 gallon, coast to coast overflow w/beananimal overflow. Waveline DC 10000 II return pump, 40 gal sump, Octopus XS200 skimmer, T5 lighting |
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07/19/2015, 10:32 PM | #8568 | |
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Quote:
2. Sizing of the overflow box depends on your tank, plumbing, flow, etc. There is no single 'correct' size. Before you drill your tank, you should carefully plan everything out with you overflow box, plumbing, etc to make sure you have everything sized and spaced correctly. Take your time and do this right before proceeding; you'll save yourself heartache later on.
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~~~~~~~~~~~~~~~~~~~~~ 120 gallon, coast to coast overflow w/beananimal overflow. Waveline DC 10000 II return pump, 40 gal sump, Octopus XS200 skimmer, T5 lighting |
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07/20/2015, 03:07 AM | #8569 | ||
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Quote:
Quote:
Your always a huge help doc, but he is asking if two holes through the tank into an external box (with 3 hole bean in the external) is sufficient. Because you want steady even flow through to the external box and drains I recommend going with 3 wholes, but Doc may have a differing opinion. |
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07/20/2015, 07:52 PM | #8570 | |
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Quote:
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07/20/2015, 07:59 PM | #8571 |
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It's just a pass through. You could do one hole if it was big enough.
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07/20/2015, 08:29 PM | #8572 |
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07/20/2015, 08:30 PM | #8573 | |
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07/20/2015, 09:27 PM | #8574 | |
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Like floyd said, the number of holes doesn't matter, as long as they are sufficient to allow relatively unrestricted flow through to the external box. I don't have a good rule to gauge the size of the though-holes, but remember, the entire flow of your sump/overflow will be running though them. If you're trying to run 1000 gph then a single 1.75" hole (1" bulkhead size) will probably be a bit small.
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~~~~~~~~~~~~~~~~~~~~~ 120 gallon, coast to coast overflow w/beananimal overflow. Waveline DC 10000 II return pump, 40 gal sump, Octopus XS200 skimmer, T5 lighting |
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07/22/2015, 09:49 PM | #8575 |
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Not sure if this has been answered in the thread already but I'm wondering about oversizing the pipes on the drain line vs. the bulkheads. I'm setting up a 250 with a peninsula overflow (first photo). 1.5" bulkheads and thinking of going with 2" piping. The drainage will flow through the first floor into the basement.
While I'll be going through the floor with flex pvc as there are some unique turns, there will likely be a nearly horizontal run from the area behind and above the furnace to the sump on the right (second photo with the drain lines coming down from the first floor where the [1] is). Will this present a problem for a silent drain and/or greatly reduce flow? Planning on running back up from the sump with 1.5" pipe via a Reeflo Hammerhead (green arrow). I'm guessing ~14ft of head on that. |
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beananimal, plumbing |
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