Sump design for 240g

Have you calculated how much water will fall down from the pipes and display tank into the sump in case of a power failure? Your sump must have enough spare space to contain all of it.

Dave.M
 
Have you calculated how much water will fall down from the pipes and display tank into the sump in case of a power failure? Your sump must have enough spare space to contain all of it.

Dave.M

Per my calculation 3g from overflow boxes, 10g max from back siphoning, and 2g approx from pipes. 15g max total. My sump should have more than 20g spare capacity.
 
Here are my comments.

1. I assume you will be using submersible pumps. If not, the last chamber does not need to be that big.
2. 1" between baffles is too narrow. You will need to be able to clean out between them at some point.
3. How did you decide on the area for GFO/Carbon/UV Pump? Are you using reactors in that space or just putting the media in a bag? If you want to run it passively (in a bag), I would add small strips of acrylic on either side of that baffle about two inches below the water level so that you can put an egg-crate shelf in to put the bags on. I use an external pump and my final section has this over the pump intake. You can cover this entire shelf with the media bags, making this use less passive and more forced.
4. I also assume you are not going to use a filter sock. I use two and that defined my first section with room to spare.
 
Here are my comments.

1. I assume you will be using submersible pumps. If not, the last chamber does not need to be that big.
2. 1" between baffles is too narrow. You will need to be able to clean out between them at some point.
3. How did you decide on the area for GFO/Carbon/UV Pump? Are you using reactors in that space or just putting the media in a bag? If you want to run it passively (in a bag), I would add small strips of acrylic on either side of that baffle about two inches below the water level so that you can put an egg-crate shelf in to put the bags on. I use an external pump and my final section has this over the pump intake. You can cover this entire shelf with the media bags, making this use less passive and more forced.
4. I also assume you are not going to use a filter sock. I use two and that defined my first section with room to spare.

Thanks for the feedback.

1- I will be using 2 small submersible pumps.
2- The 1" was based on the guidelines I read online. I am not planing on putting any filter or sponges.
3- I am planning on using BioPellet, GFO, and Carbon reactors. I looked at available and popular models. The BioPellet is around 7" diameter, GFO/Carbon about 6" diameters. I will be using small dedicated pump for the UV. I have not decided on the pump yet, but any small pump should fit in this chamber.
4- I have not decided on whether to use filter socks or not. I know the pros and cons. Initially, I will start without them. If I need them, there will be enough room in the first chamber.
 
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