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Berlin Sump BS-1, 23 inch x 12 inch x 14 inch
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Berlin Sumps

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In stock: Order by 2PM EDT for same-day shipping (M-F only)

Item #: BS1KP

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Quick Overview

With so many different kinds of filtration systems in the market, it can be difficult to choose one that works best for your aquarium. To get you started, you may want to take a look into the Berlin Sump BS-1 from Pet Store . Thi...
Product Description

Berlin Sumps Information

Part #: BS1K

With so many different kinds of filtration systems in the market, it can be difficult to choose one that works best for your aquarium. To get you started, you may want to take a look into the Berlin Sump BS-1 from Pet Store. This system is pretty straightforward and simple. It utilizes a sump area (an almost empty white box with ample space, 23" x 12" x 14") in which various kinds of reef equipment can be put in, such as protein skimmers, etc. It has a spacious area with an open top to allow for quick and easy access of the sump chambers. This feature makes maintenance easy and fast -- though maintenance for this system isn't that high and often to begin with.

The sump area can carry up to as much as 125 gallons of water. Inside the sump, you can find a small tube and a filter sock than can catch solid materials and organisms as small as 100 microns.

The Berlin Sump BS-1 is highly versatile. It can be used for either saltwater of freshwater fish tanks. It is also affordable, making it a practical option. It works best with a live rock that enables biological filtration and a protein skimmer that removes excess protein. No wonder it's a very popular choice for a filtration system by both hobbyists and professionals alike.


Dimensions (L x W x H) : 23" x 12" x 14"

What's in the Box

  • acrylic sump w/ filter sock mount
  • removable baffle
  • filter sock
  • 4ft drain hose
  • 7" x 5" x 2.5" foam filter block
  • Female Adapter Fitting - 1 inch FPT x 1 inch Slip
  • Male Adapter Fitting - 1 inch MPT x 1 inch Slip


180 day manufacturer warranty

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Berlin Sumps Reviews

Average Ratings:

Good Sump Product Review by Tim S (Posted on 2/24/14)

Comments: Great overall design. Lots of room in the middle chamber once the "movable" partition is in place. My only beef is that the movable partition must be affixed in some sort of permanent fashion to take advantage of its flexibility. Since it needs to be permanently fixed into position, future "movement" of the partition is unlikely thus eliminating the flexibility of a variable sized middle chamber to suit future component updates which may require a different set up to accommodate different equipment.

I would have preferred several fixed choices with set distances apart within the main chamber to slide the "movable partition" into and out of. Which regrettably is a modification I will be making myself.

The packing was fantastic! My kids will be popping the bubble wrap for weeks to come...

Thick, versatile acrylic Product Review by ANDREW KOONTZ (Posted on 12/19/13)

Comments: The BS-1 actually measures 23.25". Because of this, it did not fit in my stand in the direction I had imagined. The build quality is very nice, however. The removable wall is perfect for deeper-water skimmers and refugiums. Besides the measurements being inaccurate, the only complaint I have is that they shipped the drain hose inside the sump, which scratched the acrylic during shipping (not that I really care that my sump was scratched, but still they managed to package the filter sock in a separate box).

BS-2 Sump Product Review by MARTY MAZERES (Posted on 11/8/13)

Comments: Nice sump. Comes with removable center partition that allows you to increase water level's. You need to have extra socks. Bring them home and power wash them. Then put them in your washer on light cycle with a little bleach. Then soak them in fresh water with tap conditioner then swap them out. Your tank will be clear everyday. Make sure you don't order the wrong size I did.

Awesome Craftsmanship Product Review by JEFFREY ROBINSON (Posted on 10/24/12)

Comments: I was extremely pleased with this product no leaks excellent craftsmanship ships in a huge box. can accomidate a large skimmer FYI a huge Deltec 2060 MCE will just fit.

Great Product Review by ROGER SCHLOGEL (Posted on 8/5/12)

Comments: This sump for this price is awesome. Super light acrylic and spacious. I was thinking of building my own until I saw this. Highly recommended.

Been in this hobby for 15 years.

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