So, let's say you were building a sump...

[Coelli]

...and let's say you got 4 pieces of glass cut for the baffles, and then you stacked the sheets of glass in the tank to keep them safe (ha ha), and then you put your skimmer in to measure where to put the first baffle, and then like an idiot you knocked the skimmer cup you forgot to take off right onto the pile of glass and shattered the top one...

Would you go get another piece of glass cut the next day so you could still do over-under-over, or say F it and just go over-under because you have too much other stuff to handle that day?

Not like I did this, or anything. :frusty:

 

[newtothis]

Over- under is my personal choice. Gives you more room to do other things, that's if you don't knock over the skimmer body and shatter another baffle. But then again, the 1st baffle never shattered hypothetically speaking of course...on a lighter note, acrylic sheet would solve all your reeding nightmare...

 

[Fly5150]

Over under over. What's the point in doing just over under? It's a bubble trap, with over under, the bubbles just get sucked into the return pump.


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[zigginit]

sounds like this is up [MENTION=6581]Goober[/MENTION] ally

 

[Fly5150]

sounds like this is up [MENTION=6581]Goober[/MENTION] ally

He's the only one who's ever made a sump?


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[zigginit]

He's the only one who's ever made a sump?

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of course not, he has just been making his own tank and sump from scratch.

 

[Fly5150]

of course not, he has just been making his own tank and sump from scratch.

Every sump ever made has been made from scratch. Just saying


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[zigginit]

Every sump ever made has been made from scratch. Just saying


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my point was most people don't bother to make it them selves. I would not trust myself to make a tank or sump from scratch. people who do it all the time may not find it so hard

 

[Fly5150]

my point was most people don't bother to make it them selves. I would not trust myself to make a tank or sump from scratch. people who do it all the time may not find it so hard

The question was about design and function, not difficulty.


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[zigginit]

The question was about design and function, not difficulty.


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I did not comment on either. moving on

 

[Six2seven]

Over under over doesn't make any sense because the third baffle is just like having the first baffle. It should actually be under over under. the last baffle should be under in any scenario.

 

[Fly5150]

Over under over doesn't make any sense because the third baffle is just like having the first baffle. It should actually be under over under. the last baffle should be under in any scenario.

If the last baffle is under, the falling water will create air bubbles. In my sump, the last baffle is over, which is the water height of the last chamber.


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[Six2seven]

If the last baffle is under, the falling water will create air bubbles. In my sump, the last baffle is over, which is the water height of the last chamber.


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Sorry but I disagree on this one, if the last baffle is "under" there is no where for the water to fall/create bubbles unless that last chamber is empty.

If the last baffle is over as in your tank, the second that water level falls it will create bubbles as well as noise. The only way around it is if you have an ato.

 

[zigginit]

I think having the last baffle as over would direct any remaining bubbles to the surface and hopefully away from the return pump. I think the spacing of the baffle also has a lot to do with turbulence and creation of new bubbles. they should have room to escape before being sucking into the next baffle. ATO is going to keep the water where it should be

 

[Fly5150]

Sorry but I disagree on this one, if the last baffle is "under" there is no where for the water to fall/create bubbles unless that last chamber is empty.

If the last baffle is over as in your tank, the second that water level falls it will create bubbles as well as noise. The only way around it is if you have an ato.

I see your point. I use an ato, so I don't worry much about it. I'm not sure I agree about no bubbles going over, if you don't have an ato in the over under situation, the water level can fall enough to create bubbles in this scenario as well.


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[Fly5150]

I think having the last baffle as over would direct any remaining bubbles to the surface and hopefully away from the return pump. I think the spacing of the baffle also has a lot to do with turbulence and creation of new bubbles. they should have room to escape before being sucking into the next baffle. ATO is going to keep the water where it should be

Agreed, Steve is saying that if the water level falls in the pump section, bubbles will be created, which, in my sump, doesn't happen. The water actually runs down the baffle, without air bubbles or splashing.


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[Six2seven]

I think having the last baffle as over would direct any remaining bubbles to the surface and hopefully away from the return pump. I think the spacing of the baffle also has a lot to do with turbulence and creation of new bubbles. they should have room to escape before being sucking into the next baffle. ATO is going to keep the water where it should be

You're right about the spacing.

I think the spacing of the baffles and proximity of the return pump if using OVER-UNDER, has a lot to do with it. Now that i think of it, the amount of flow in the sump might have a major impact in how fast the water drags over the bubbles to the final chamber where it is over under or under over.

 

[zigginit]

I wonder if you slanted the last baffle if it would not make bubbles. I just removed all the baffles and use distance and a buffer for bubbles. sometimes I get small micro bubbles but its due to me doing something in the tank

 

[Six2seven]

Agreed, Steve is saying that if the water level falls in the pump section, bubbles will be created, which, in my sump, doesn't happen. The water actually runs down the baffle, without air bubbles or splashing.


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As I wrote in my post above, it can and will happen as it has in my past experience but a major factor is the amount of flow falling over the baffle. with a high flow sump like I had water came over like a waterfall. In your case it might not be as strong in your sump design which is why it falls over the baffle smoothly

 

[zigginit]

As I wrote in my post above, it can and will happen as it has in my past experience but a major factor is the amount of flow falling over the baffle. with a high flow sump like I had water came over like a waterfall. In your case it might not be as strong in your sump design which is why it falls over the baffle smoothly

yeah the high flow is going to effect it a lot. I kinda have low flow in the sump. if I upgrade my return I may be looking into new ideas