Featured categories
Featured items
Best sellers
Newly Listed
See allAll items

REFUGIUM KIT - 75 Gallon 5 Chamber ezBuild Ultimate Adjustable Sump Kit
C $202.72 to C $286.32

29/40 B/55/60 B Gallon Heavy Duty Aquarium Fish Tank Dividers - No Suction Cups
C $38.30 to C $49.26

REFUGIUM KIT - 60 Gallon Breeder 5C Roller Mat Sump Kit - Aqueon / Imagitarium
C $138.33 to C $189.03

REFUGIUM KIT - 20 Gallon Long Basic Adjustable Depth Aquarium Sump Kit
C $52.00

REFUGIUM KIT - 75 Gallon ezBuild Pro 5 Chamber Adjustable Sump Kit
C $205.48 to C $247.96

REFUGIUM KIT - 20 Gallon High 4 Chamber ezBuild Pro Adjustable Sump Kit
C $116.41 to C $130.11

REFUGIUM KIT - 10 Gallon ezBuild Pro Sump Kit for Aqueon / Imagitarium (MTO)
C $95.85 to C $106.81

Aquarium overflow box with lid - Surface skimmer for drilled tank
C $27.34 to C $46.52

REFUGIUM KIT - 55 Gallon 5 Chamber ezBuild Ultimate Adjustable Sump Kit
C $164.37 to C $205.48

15/20 Gallon Heavy Duty Aquarium Fish Tank Dividers - No Suction Cups
C $27.34 to C $34.19

REFUGIUM KIT - 20 Gallon Long 5C ezBuild Ultimate Sump Kit Aqueon / Imagitarium
C $131.48 to C $161.63

REFUGIUM KIT - 40 Gallon Breeder 5C ezBuild Pro Sump Kit - Aqueon / Imagitarium
C $184.92 to C $232.88

REFUGIUM KIT - 60 Gallon Breeder 5C Ultimate ezBuild Sump Kit Aqueon/Imagitarium
C $195.88 to C $269.88

Refugium Kit Parts - Adjustable Depth Weir baffle
C $21.86 to C $61.59

REFUGIUM KIT - 40 Gallon Breeder 4C ezBuild Ultimate Sump Kit Aqueon/Imagitarium
C $173.96 to C $234.25

REFUGIUM KIT - 40 Gallon Breeder Basic Sump Kit - Aqueon / Imagitarium
C $93.11 to C $135.59

REFUGIUM KIT - 10 Gal Adjustable ezBuild Pro Sump Kit - For Klir Fleece Filter
C $82.15

REFUGIUM KIT - 20 Gallon High 4 Chamber ezBuild Ultimate Adjustable Sump Kit
C $132.85 to C $168.48

5.5/10 Gallon Heavy Duty Aquarium Fish Tank Dividers - No Suction Cups
C $15.00 to C $21.86

REFUGIUM KIT - 20 G Long 5 Chamber Filter Foam Adj Sump Kit with Sealed Inlets
C $123.26 to C $161.63

29/40 B/55/60 B Gallon Heavy Duty Aquarium Fish Tank Dividers - Suction Cups
C $45.15 to C $62.98

REFUGIUM KIT - 10 Gallon Adjustable Aquarium Sump Kit - Sngl Filter Sock Holder
C $61.59

REFUGIUM KIT - 55 Gallon 5 Chamber ezBuild Pro Adjustable Sump Kit
C $150.66 to C $178.07

Refugium Kit Parts - Refugium baffle
C $12.26 to C $38.30

REFUGIUM KIT - 20 Gallon Long ezBuild Sealed Inlet 5 Chamber Adjustable Sump Kit
C $123.26 to C $161.63

REFUGIUM KIT - 40 Gallon Breeder 4 Zone Roller Mat Sump Kit - Aqueon/Imagitarium
C $113.67 to C $154.78

REFUGIUM KIT - 29 Gallon 5 Chamber ezBuild Pro Adjustable Sump Kit
C $138.33 to C $184.92

29/40 B/55/60 B Gallon Heavy Duty Aquarium Dividers - Silicone Install
C $39.67 to C $52.00

Refugium Kit Parts - Bubble Trap baffle
C $12.26 to C $38.30

REFUGIUM KIT - 29 Gallon Adjustable Sump Kit - Sngl Sock - Choose a Depth - CB
C $73.93 to C $87.63

Aquarium Protein Skimmer Stand 1/4" Cast Acrylic **Made in USA**
C $32.82 to C $47.89

REFUGIUM KIT - 20 Gallon Long Adj Aquarium Sump Kit - Dual Filter Sock Holder
C $76.67

REFUGIUM KIT - 20 Gallon Long Adj Aquarium Sump Kit - Single Filter Sock Holder
C $73.93

REFUGIUM KIT - 20 Gallon High Adjustable Sump Kit - Dual Sock - Choose a Depth
C $76.67 to C $90.37

Aquarium Corner and Center Overflows for standard glass aquariums - made in USA!
C $16.38 to C $75.30

REFUGIUM KIT - 20 Gallon Long ezBuild 4 Chamber Adjustable Sump Kit
C $102.70 to C $109.56

REFUGIUM KIT - 55 Gallon 4 Chamber ezBuild Ultimate Adjustable Sump Kit
C $141.07 to C $182.18

5.5/10 Gallon Heavy Duty Aquarium Fish Tank Dividers - Suction Cups
C $32.82

REFUGIUM KIT - 20 Gallon Long Roller Mat Ready Sump Kit 5C- Aqueon / Imagitarium
C $89.00 to C $109.56

REFUGIUM KIT - 10 Gallon Basic Adjustable Depth Aquarium Corner Sump Kit
C $45.15

Refugium and Sump Kit Parts - Inlet Lid or Outlet Lid
C $13.63 to C $31.45

REFUGIUM KIT - 60 Gallon Breeder 4C Pro ezBuild Sump Kit - Aqueon / Imagitarium
C $164.37 to C $195.88

REFUGIUM KIT - 29 Gallon 4 Chamber ezBuild Pro Adjustable Sump Kit
C $123.26 to C $142.44

REFUGIUM KIT - 10 Gallon Dual Sock Aquarium Sump Kit - Aqueon / Imagitarium
C $68.45 to C $79.41

REFUGIUM KIT - 5.5 Gallon ezBuild Pro Sump Kit for Aqueon / Imagitarium (MTO)
C $58.85

REFUGIUM KIT - 55 Gallon 4 Chamber ezBuild Pro Adjustable Sump Kit
C $127.37 to C $147.92

REFUGIUM KIT - 20 Gallon Long 4C Roller Mat Sump Kit Aqueon/Imagitarium
C $72.56 to C $89.00

REFUGIUM KIT - 20 Gallon Long ezBuild 2 Zone Sump Kit - Aqueon / Imagitarium
C $150.66 to C $175.33
About us
Marine Biosystems manufacturers quality parts and accessories for the aquarium hobby. Current products include sump and refugium kits, filter sock holders, overflows, tank dividers and protein skimmer stands.
Our goal is to produce the highest quality, most innovative products of their type on the market and to do so while meeting the specific needs of each and every customer. With innovative features like our prefabbed sock baffles, internal seal sump lids and overflow boxes with smooth radius-ed edges your aquarium project will look great, stay cleaner and perform better over the long haul.
All our products are made in-house and the vast majority are made when you order so customization is available upon request. If you don't see an aquarium product you need listed, please contact us for a custom item quote.
Our goal is to produce the highest quality, most innovative products of their type on the market and to do so while meeting the specific needs of each and every customer. With innovative features like our prefabbed sock baffles, internal seal sump lids and overflow boxes with smooth radius-ed edges your aquarium project will look great, stay cleaner and perform better over the long haul.
All our products are made in-house and the vast majority are made when you order so customization is available upon request. If you don't see an aquarium product you need listed, please contact us for a custom item quote.
Seller feedback (835)
- g***0 (4)- Feedback left by buyer.Past monthVerified purchaseOverall description is accurate and what you get is exactly as shown. My first package had one item damaged in transit. Packing material was great, so it must have been roughed up in shipping. I contacted the seller and he got back to me within 30 minutes and in short order had the replacement part shipped. The build quality is excellent and I’m excited to put this all together. The only thing that can go wrong from here is me messing up the installation.
- d***d (58)- Feedback left by buyer.Past yearVerified purchaseThe Kit is very well made and came packaged very nicely. I was very impressed with the packaging as well as the quality. It fit my Aqueon tank perfectly, even the bottom corners of the baffles were rounded to sit perfectly on top of the silconed edges. The seller was very responsive and helpful with all of my questions and concerns. I would definitely recommend this kit and purchasing from this seller.
- r***a (12)- Feedback left by buyer.Past yearVerified purchaseWell made, exactly as described, arrived quicker than advertised and the seller had excellent and fast communication. They even refunded the difference when it cost less for shipping without me even asking or knowing it cost less. You almost never get customer service like that anymore. We have already bought two of these and will definitely always come back to this seller for future projects and will recommend them to everyone!
- e***r (61)- Feedback left by buyer.Past 6 monthsVerified purchaseIn love with the product, I received everything in a perfect box, truly a very professional job, it was worth it, I recommend it 100%. I would have liked it to have a bracket between the grids for the return to separate and be able to put activated carbon on top, but it was what I bought and it arrived exactly as I ordered, impressive, it was truly worth it.
- e***t (694)- Feedback left by buyer.Past 6 monthsVerified purchaseFast shipping, smooth transaction, great communication, highly recommended A+
- u***u (315)- Feedback left by buyer.Past 6 monthsVerified purchaseExcellent communication and support. Answered all my pre-purchase questions. Shipped fast. Product arrived in great shape. Just installed, will see how it performs long-term. A++