Some Geometry help...

[GREEF stricken]

I have a 92 corner tank I want to build a custom sump for. Goal is an identical "pie" shape but smaller. My mind doesn't do spacially creative well. Any thinkers out there( or hell, even better if someone's actually DONE it), can tell me best way to divide into typical 3 chamber sump? Water from tank, fuge, return, with one chamber large enough to accommodate skimmer footprint...thanks.

GS

 

[Jlobes]

its possible, but would need more details to be helpful. dimensions of tank, overflow/return placement, skimmer dimensions, etc.

 

[GREEF stricken]

Obviously I haven't a clue on the radius, but I'm thinking 26.5" sides, 23" high and I'll get Skimmer footprint when I get home. O/F is at the "pointed" piece of pie.

GS

 

[GREEF stricken]

Ok...skimmer footprint is 16.5"L X 12"W

GS

 

[GREEF stricken]

Anybody??

Thanks,
GS

 

[vertigo01]

What are the stand dimensions, internally? Seeing as this is where you will be putting the sump you will need these. Also is there a center vertical support that would hinder the sump installation?

 

[GREEF stricken]

Obviously I haven't a clue on the radius, but I'm thinking 26.5" sides, 23" high and I'll get Skimmer footprint when I get home. O/F is at the "pointed" piece of pie.

GS

The dimensions of the sump have already been chosen to fit into the cabinet. It will be dropped in from above, no brace.

GS

 

[vertigo01]

The following dimensions as accurately as possible are needed.
From the pointy end to the fattest part of the radius. As well as the 2 side lengths. Otherwise it is a shot in the dark.

 

[GREEF stricken]

The whole reason I included the quote in my last post was so that you could see my sides have been decided on at 26.5 inches each. I'm sure there is some math formula that will give you the actual distance to the deepest part of the radius bow at the center, but as I have not yet had this fashioned by my acrylic maker, I cannot put a tape measure on it. Once I get the actual design and numbers together with guidance here, I will take those numbers and the design to my acrylic guy.

That's the best I have for the question you asked.

Not trying to be difficult, I swear .

GS

 

[vertigo01]

The reason I asked was because you mentioned you believe that length of the sides were 26.5. I know that you are not trying to be difficult and certainly I haven't taken it that way. However without knowing the distance from the point to the quadrant I would be guessing on a radius, which could be either on the money, or off by more than a few inches.

Just by drawing it up real quick in AutoCAD, you won't have much room left over for an internal return pump once you situate the skimmer.

 

[Kungpaoshizi]

Just take your dimensions of the above tank and multiply by, for example, .8
So if your length of the front is 32", then 32 x .8, and you'll get 80% of that dimension. Do the other dimensions as well, and you'll have an acceptable 'mini' version of the tank above.

Of course no matter how small or big you go, be sure it fits through the stand doors

As far as the best shape for each chamber, that's a tough call. I would probably just leave it an open, no-chamber design, and then place materials in the area to make it easier.

 

[Dapperjman]

Will the sump be a quarter of a circle? If the sides are 26.5", doesn't that mean the radius is 26.5"? The side is the radius.

 

[keithp]

The sides are at least very close to the radius length.

I have a 90 corner but built a larger stand with access from the sides and installed a 40B. I have a bubble trap but neither the drain, nor vertex skimmer release any bubbles after the first month so I am not sure why'd need it.

You want the skimmer and fuge accessible so the return pump goes in the back corner because it will hopefully only need bi-annual maintenance. I suggest a 10 gallon return section. You may only need 6 gallons to prevent a flood with small pipe but setting locline too deep is an easy mistake. If the sump dividers leave significant volume at the top, this space could be reduced. Do the math to make sure. The return section will be easiest to make rectangular but could be a wedge or quarter cylinder. Make it wide enough for the pump plus space to work a union.

You will need space next to the skimmer for the drain pipe(s). The stock weir drops plumbing in the back corner so you would need to angle the plumbing forward. You should be able to fit the skimmer and still have some space for a fuge. Working under there in the back corner won't be easy so think about itcarefully. If you bought the tank new, lay out the sump with pencil on the cardboard and see if you can work in the back corner of a cabinet with only 12 inches clearance above the sump. A taller than normal stand would be easier.

Good luck.