Online Discount Pet Supplies & Toys For All Animals
Buy today, ships today
Free shipping on orders over $75
40,000 pet products
Buy today,
ships today
We promise to ship your order as fast as humanly possible. In fact, 99% of orders placed before 2 pm EST (M-F) ship the same day! Learn More
FREE Shipping on
Orders Over $75
Standard ground shipping (1-7 business days) starts at a low $5.99 and most orders over $75 ship FREE. Learn More
40,000 Pet Products
We carry over 40,000 pet-related products for every pet in your home. We stock all the popular products you’ll find in your local pet store, but sell them for less! See Specials
Your cart is currently empty.
Home » Aquarium Supplies  » Filters  » Overflow Boxes  »  Marine Depot Overflow Box Nano
Marine Depot Overflow Box Nano

Marine Depot Overflow Box Nano

Average Rating 4.5 6
Write A Review
Product Review
We value your opinion & experience
Thank you for taking the time to review our products!

This is a Product Review for: Marine Depot Overflow Box Nano
Name to display on the review:
Location (ex: Anaheim, CA):
Your experience level:
How would you rate this product?
Review Title:
Write your review:
(Please focus on product quality and performance)
In Stock: Buy now and your order will ship the next business day
This item is in stock in our East and West Coast warehouses
Item #:
Notify Me
Just enter your email address below and we'll let you know when the product you are looking for becomes available!

Item Code:
Your Email:
Add to Cart or Notify Me
This item is temporarily unavailable but will be back in stock soon.

Item #
Click the Add To Cart button below if you'd like to reserve this item today. Any other items included in your order will be immediately processed and shipped. We will ship this item separately as soon as it arrives. We will not charge you for this item until it ships and you will incur no additional shipping charges.
Enter your email address in the field below and click the Notify Me button if you'd like us to send you an email when this item becomes available. Although you will be immediately notified when we have stock on hand, we will not reserve any units for you; you must return to our website and place an order.

FREE Shipping Promo offers FREE standard ground shipping via UPS on orders of $75 or more for orders containing non-sale items (orders which do not qualify for our FREE shipping promotion will still be shipped at a discounted rate). All orders, including those that qualify for our FREE shipping promotion, are subject to shipping insurance charges at the rate of $0.35 per $100.00 increment for orders shipped via UPS ground service (a minimum of $0.35 per box will be charged for insuring shipments).

Terms and Exclusions:
  • Offer valid only on orders shipping within the contiguous United States. Orders sent to Alaska, Hawaii, Puerto Rico, Guam or other US Territories will not qualify for this promotion.

  •'s FREE shipping promotion does not include products sent in oversized or particularly heavy boxes. This may include but is not limited to chillers, external water pumps, metal halide magnetic ballasts, DIY kits and substrate/sand. These items may still be subject to additional shipping insurance and special handling charges. Should shipping surcharges apply, they will be noted on individual product pages and also displayed in the shipping cart. We will, however, pay a portion of the shipping charges for these orders.

  • Shipping surcharges, such as shipping insurance and special handling are NOT covered under the FREE shipping promotion.

  • Shipping charges for returned merchandise is non-refundable. Please read's Return Policy for more information
These exclusions are necessary in order for us to be able to offer this type of promotion to our customers. We do our best to discount shipping as much as possible to make buying items from our online store easy and affordable.

Marine Depot Overflow Box Nano Information

Product Manuals & Documentation

High quality and economical hang-on overflow box allows you to easily add a sump, refugium or wet/dry filter to your system. U-tube design allows for easy and convenient installation. Adjustable pre-filter hight allows you to adjust the water level inside your aquarium.

  • 3/4" Bulkhead
  • U-tube
  • Noise-Reducing Cylinder Foam Sleeve
  • Nylon screw and wing nut
  • Surface Skimmer Box
Model Tank Size Overflow Body
Surface Skimmer
Max. Flow Rate Drain Size
Nano up to 30 Gal 4"x2.5"x8" 4"x1.5"x6" 200GPH 3/4"
OF-300 up to 60 Gal 6"x3"x10" 6"x2.5"x6" 300GPH 1"
OF-800 up to 120 Gal 8"x3"x10" 8"x2.5"x6" 800GPH 1"
OF-1000 up to 150 Gal 9"x3"x10" 9"x2.5"x6" 900GPH 2 x 1"
OF-1200 up to 200 Gal 10"x3"x10" 10"x2.5"x6" 1000GPH 2 x 1"
OF-1800 up to 320 Gal 12"x4"x10" 12"x2.5"x6" 1600GPH 1-1/2"

Manufacturer Info

Marine Depot was started in 1998 by a self-professed reef geek and pre-med student Ken Wong. Ken envisioned a one-stop shop where customers could find everything they needed, from technical product specifications, reef aquarium information, expert advice on the hobby and friendly one-on-one customer support. Having grown from a one-man crew to being one of the world’s largest suppliers of reef and marine aquarium products, this very core philosophy still lives strong in the Marine Depot culture 20 years later.

Marine Depot Overflow Box Nano Reviews

Average Rating
(6 reviews)
Sort Reviews By:

Works like a charm!

Reviewers Rating Excellent!

Posted: 9/7/2016 from STERLING, VA UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: Been using it for about 3 months now and I can't begin to describe happy I am with it - and how much easier it has made maintenance and water changes compared to my previous HOB overflow. Like the title says, it works like a charm... and the siphon restarts flawlessly each and every time.

Did you find this review helpful? Yes No

Great product great price

Reviewers Rating Excellent!

Posted: 5/24/2016 from SHALIMAR, FL UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: I built a diy sump and didn't want to drill the glass in my 29 gal cube. Did 2 weeks of research before buying this one. It's built well. The screws are big enough to not have to use tools and will last a long time. Took 10 seconds to prime the u tube with the included tubing. did multiple test to make sure it wouldn't lose prime in an outage. Works perfectly every day. (Turn off flow to feed mandarin). Very please with how well it performs and looks like quality build. The only thing missing was directions. But only took 1 minute to figure it out. I would recommend this to anyone who doesn't want to drill their glass.

1 of 1 People found this review helpful, did you? Yes No

Good for money

Reviewers Rating Great

Posted: 5/3/2016 from PIKEVILLE, KY UNITED STATES
4.0 5
Experience Level: Intermediate

Comments: I ordered this overflow after setting up my sump and installed it hours after arrival. I immediately notice how loud it was. So after some tweaking i figured out a solution. First tank the factory standpipe and put it in the garbage. Next cut a piece a 3/4 inch pvc into a 4 1/4 inch piece and use a dremel and sand 1 inch of 1 side of the pipe segment. Insert the new standpipe into the factory bulkhead and prime overflow. If done right overflow noise will be considerably quieter.

1 of 1 People found this review helpful, did you? Yes No

Overflow box

Reviewers Rating Great

Posted: 4/16/2016 from DENHAM SPRINGS, LA
4.0 5
Experience Level: Intermediate

Comments: It is made very well and is very easy to set up. The only problem I have with it is the noise. You can hear the water running all the time.

1 of 1 People found this review helpful, did you? Yes No

overflow box

Reviewers Rating Great

Posted: 3/10/2016 from PONTE VEDRA BEACH, FL UNITED S
4.0 5
Experience Level: Expert

Comments: Very good item. Slight gurgling noise but still a good item.

Did you find this review helpful? Yes No

Great overflow box

Reviewers Rating Excellent!

Posted: 2/10/2016 from SUMTER, SC UNITED STATES
4.5 5
Experience Level: Beginner

Comments: I've had the overflow box running now for a week and its been great. Easy to set up and put together, but I give it 4 1/2 stars because there are no instructions. Just looked at youtube videos of it put together to figure it out and just took it to my lfs and they showed me how it goes. The connector for it is a 1in connector.

3 of 3 People found this review helpful, did you? Yes No

Terms & Conditions | Privacy Policy © 1999-2015 All rights reserved.