What to do with 2 drain box towers? HELP!!!!

CJBROWN

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#1
Hey folks,
Hoping some creative types can come along with suggestions on what to do with this fish-only acrylic tank I inherited. Since it was free it kind of negates the notion of just junking it and buying a replacement. Besides, it's a nice tank and hopefully can be retrofitted for modern reef keeping.

I have a 75gl reef that's been going for 3 years and is a great success. I built an overflow box on it, cut a weir across the top of the back of the tank, and setup a Herbie/BeanAnimal drain system on it and of course it works perfectly. So I have a full and complete understanding of how this all works.

Now, the new tank...
My neighbor sets out this 112gl acrylic (60x18x24H) to sell and I ended up getting it for free. Big deal right? LOL. It was all scratched to rat$hit and I have wet sanded and polished the front, inside and out, and it's beautiful. I'm now thinking maybe I can use this thing after all.

And my question today - this stupid thing has a 1" BH in each corner drainbox. What in god's name am I gonna do with that? I want to run about 800gph thru the sump and there's no way those little drains are gonna keep up, and if they do it's gonna be noisy and bubbly in my sump. There are two other 1" bulkheads in the back, they look like they are either returns or for a closed loop system. I could use one for an emergency overflow/drain.

These are my possible solutions. PLEASE PLEASE PLEASE give me a better option!! confused1

1. put durso stand pipes in and run it
2. re-drill for 1-1/2" durso drain pipes, deal with the noise. Join them and install a ballvalve to slow the flow down?
3. Connect the two boxes with an acrylic tube
4. Build a weir across the top to join them, setup the two drains beananimal style. Or re-drill the back for bean style drains. This would leave stagnate water in the drain towers though.
5. Break them both out and start over (really don't want to do this, it will make a mess out of the tank)

What else can I do? I'm sure one standpipe on full siphon would handle the flow, but then the other box with the open standpipe would get stagnate.
What about #3? I could weld in a piece of 2" diameter acrylic tube or pvc so they would both flow water. I'm just not sure one of them on siphon would pull from the other box. I could use one of the other bulkheads on the tank back as an emergency if I did this, the other for a return.

Whatever I choose, I can set it up in the garage and test it. I'm thinking mag9.5 or one of Chad's jabao pumps. I can't go too high as I need to plumb a chiller inline there on the return. Will supplement flow in the tank with a couple of 1000-1250 gph powerheads.
 
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#2
And my question today - this **** thing has a 1" BH in each corner drainbox. What in god's name am I gonna do with that? I want to run about 800gph thru the sump and there's no way those little drains are gonna keep up, and if they do it's gonna be noisy and bubbly in my sump. There are two other 1" bulkheads in the back, they look like they are either returns or for a closed loop system. I could use one for an emergency overflow/drain.
why do you say that it's not enough to drain the flow?

i've got (2) 1" drains on my 100 gal, and only 1 is being used for the primary, the 2nd 1" is only used as an emergency overflow. I'm using a panworld pump that's pushing something ridiculous like 1600 gph.
 
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#3
Pics might help us understand... however a 1in drain can take quite a bit...I have a 1in on my 100g running a mag 9.5.

If its acrylic you can redrill it for a larger bulk head...but if the box lacks space it'll prob be hard to fit a stand pipe in it.
 

CJBROWN

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Standard spec's say a 1" drain will handle about 300gph as a gravity drain. On full siphon about 1500gph.

If you use one for a primary how do you keep the other box from stagnating?

I can take some pix.
 
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Standard spec's say a 1" drain will handle about 300gph as a gravity drain. On full siphon about 1500gph.

If you use one for a primary how do you keep the other box from stagnating?
mine's using 2 drains from a single overflow - my point was more that (1) 1" overflow can handle quite a bit of flow.

also, not sure where you're getting your number from, but at standard pressure, a 1" pvc is suppose to be good for 2200 gph.
 

pgr11

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Being gravity feed 1"sch40 will handle minimum 960 gph. Even if your conservative and say account for only 600 gph per line You'll be fine with your current setup with 2 1" drains
 
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pgr11

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mine's using 2 drains from a single overflow - my point was more that (1) 1" overflow can handle quite a bit of flow.

also, not sure where you're getting your number from, but at standard pressure, a 1" pvc is suppose to be good for 2200 gph.
That's pressurized line not gravity feed with little to no pressure
 

CJBROWN

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Since I don't really know how old these bulkheads are I would like to install new seal washers...or just replace the whole thing? It looks like the drainboxes are standard and the two on the back wall are sched 80. they must have added the back ones later.
Where can I get new seals for them?

So you guys wouldn't try to join the boxes?

How 'bout the drain lines? Run them into a 1-1/2 and put a ball valve on it?
Or a ball valve to one or both if seperate?

And y'all don't think it will be noisier than a waterfall? I'm betting my bottom dollar it will be super noisy with 1" pipe. Maybe larger pipe and exit under the sump water level will help. I guess I need to build the stand and fill it up with water and run it.
 

CJBROWN

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#9
Okay, couple'a pics...you'll have to excuse the dirt, it's been sitting outside for a few months.

112gl with corner drain boxes, 1" bulkheads.



 

Six2seven

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#10
It looks like there is plenty of space in the overflow boxes. I would cut 1&1/2 inch holes over the 1inch holes to have more flow. You can still run less but you will have less noise with bigger holes. You can never have too much flow. I wouldn't join the boxes. Not sure what you really mean by that but It looks nice the way it is.
 

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