125/50 - update Jan 2015 (pics & video) - Page 11 - The Planted Tank Forum
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post #151 of 416 (permalink) Old 10-01-2013, 12:17 PM Thread Starter
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I ran the proposed config through RC's nifty head loss calculator (http://www.reefcentral.com/index.php...oss-calculator) and it looks like we'll only be getting something like 600GPH net.

To resolve this, there are a few options...
  1. Add two light-duty powerheads to ensure proper circulation inside the display tank ($60-70 total, unless I can clean up the ones I have - prev. used in SW tank)
  2. Replace the ghetto 'two-pump-return' with a proper single pump (DC variable BLING) ($200-250 total)

I'm thinking that a cleanup effort on the two Koralias probably has the highest WAF.


So tonight's tasks:
  1. Build overflow box!
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post #152 of 416 (permalink) Old 10-01-2013, 12:20 PM
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Dang boy, that's looking awesome! Seriously, I really like what you've done so far. As for the tank return, don't cut a hole. It'll make things a little more difficult to access quickly should the need arise.

I've never regretted over engineering a system, but often regretted under engineering one.

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post #153 of 416 (permalink) Old 10-01-2013, 12:27 PM Thread Starter
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Tanks! (haha!)

Yeah, after playing around some more, seems like a bad idea to use the bulkhead here. Once everything is up and running (well, testing), I'll start to play around with spraybar ideas to divert the flow across both long panes of the tank.
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post #154 of 416 (permalink) Old 10-01-2013, 04:53 PM Thread Starter
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More research, better idea. One or two Koralias toward the bottom of the tank at the overflow end. Leave the return as-is, pointed diagonal across the top of the tank.

This should allow a nice circular pattern - Koralias ensuring that the bottom water gets sent across and picked up by the return flow, which then sends it back across the top and out the overflow.

As a side benefit, it means I still get to keep all intrusive plumbing/wiring at the overflow end, so it's an aesthetic win.
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post #155 of 416 (permalink) Old 10-01-2013, 07:20 PM
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I'm going to be using either a Korallia 4 or EcoTech VorTech MP40w on my tank, so a pair of Korallias on your system should work. You may find that the pump is better placed near the top, or higher up in the tank, as they have significant draw that could disturb your substrate. Also, if you plan to have any hardscaping materials, there's a good chance you'll get some eddy induced excavation on the flow side. I did a flow test with the MP40s (on 100%, granted) in the reef I'm setting up and got SIGNIFICANT displacement...down to the glass, around some of the rocks.

I've never regretted over engineering a system, but often regretted under engineering one.

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post #156 of 416 (permalink) Old 10-01-2013, 08:15 PM Thread Starter
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Hm, good points about 'eddy induced excavation'. That's a nice term.

I picked up the Spa-Flex today - $2.90/ft!!! Ouch. Hope I mentally measured correctly. (mistake#1) Unfortunately Canadapost's delivery dates were super-wrong, delivery is actually the 3rd now, so box building won't happen until Thurs/Fri.

This means, however, that I can go dig those Koralias out, see what's what. Maybe even go out and see some friends tonight. WEIRD.
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post #157 of 416 (permalink) Old 10-02-2013, 02:07 AM Thread Starter
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Friends overrode tank stuff, and it was good - I need to get out and see them more than once every quarter.


I did get a little tank stuff done - drip tray is siliconed in place (spot decision), and drilled the bulkhead hole for the returns. If Dropbox wasn't so anal about battery life, I'd have even posted pictures.
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post #158 of 416 (permalink) Old 10-02-2013, 11:24 AM Thread Starter
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BTW, Phil, this should help your sump planning...wished I had it when I was doing mine! http://extensions.sketchup.com/en/content/3skeng-pipe
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post #159 of 416 (permalink) Old 10-02-2013, 12:15 PM
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nice build thread, and you were right....this is pretty similar to mine!
One thing I would suggest. The standard 3/4'' tee that you are using for the return pumps could case increased head pressure due to the two pumps competing with each other. I would suggest looking for a sweeping tee which is sometimes called a street tee. This will allow the second pump to place its flow inline with the primary. This should eliminate some back pressure and head lose. See the picture attached, you would reverse it from what the pictures is showing
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post #160 of 416 (permalink) Old 10-02-2013, 12:17 PM Thread Starter
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Brief update pics...

Bulkhead drilled


Drip tray siliconed in place

  • Still debating if the lip at the edge of the drip tray is a necessity...I suppose it'll add vertical /horizontal strength if nothing else so I can get rid of the central support. Ya, okay fine.
  • Had a brainwave about the drains last night - I'll cut out a section of the lid to be plexiglas, then cut out holes to exactly fit 1.5" PVC. Alternatively, cut the glass using my Dremel...hm. Ya, that.
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post #161 of 416 (permalink) Old 10-02-2013, 12:18 PM Thread Starter
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mnellis3023, I looked and looked - nothing. Would have to be ordered off the internet, and I just don't care that much about the issue to pay $15 shipping for a $2 part.

Finding those in 2", or even 1.5" was not an issue...in 1" or 3/4"...non-existent at the big box stores.
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post #162 of 416 (permalink) Old 10-02-2013, 12:19 PM
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Quote:
Originally Posted by crazymittens View Post
mnellis3023, I looked and looked - nothing. Would have to be ordered off the internet, and I just don't care that much about the issue to pay $15 shipping for a $2 part.

Finding those in 2", or even 1.5" was not an issue...in 1" or 3/4"...non-existent at the big box stores.
That sucks! They are pretty easy to find here
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post #163 of 416 (permalink) Old 10-02-2013, 12:24 PM Thread Starter
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Yeah, I'm SUPER jelly of you US residents and your epic online shopping options. Super jelly. Also slightly bitter about how hosed Canada got with NAFTA...but I digress.

If the flow is really that awful, I'd rather put the money toward a quality pump. I saw a number of nice units for sale on the local aquaria forum.
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post #164 of 416 (permalink) Old 10-03-2013, 02:15 AM Thread Starter
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Awwwwww yeeeeaaahhh
Progress thus far. Oh, something came early in the mail. I used it tonight.




Layout post-cleaning
I spent a good hour making sure ALL the old silicone was removed.



Duct tape to hold things together during caulking


Clampies
You can never have enough clampies. Whoever says otherwise...stop listening to them.



Edge came out aight


This corner chipped ever so slightly...but it'll never be underwater, so whatevs.


Made QUADRUPLY sure this side was perfectly square
The tank side, don't you know.


Threw together the internal overflow while I was at it
This'll actually just get regular old silicone on the inside. With the bracing, it'll never ever ever move.





Drum roll. Please.

Floating pipes???


WAT


An hour with this and a dremel at 25000RPM. My wrist is displeased.


SUMP. DONE.




So...wow. The sump is ready. And I still managed to keep it fully sealed!! Super happy.


Oh, and overflow box will 100% be done this weekend.

Which means plumbing is right behind.


A few items on my 'wat' list:
  1. External overflow lid??!
  2. Entry point into the stand for plumbing!?
  3. How to nicely anchor return/drains so no breaky-breaky!?
  4. Blinging out under the stand
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post #165 of 416 (permalink) Old 10-03-2013, 02:45 AM
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Everything is looking good but I have to ask, why you are going to run 2 pumps with only one return? Merging two return pumps to a single return line will result in the pumps resisting the pressure of the other pump from back pressure. I have heard of a few people doing this on their reef tanks but they always used a true "y" fitting that was at least 2x the size of the returns on their pumps. For example if your return on your pump is 3/4" your should use 1.5" plumbing. I can't tell the size of your return plumbing but I would try to find a different way to connect them if you plan on running them on the same return line. Or maybe you plan to get just a single larger pump in the future but just thought I would give my opinion on what I have seen others that tried this do.

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