Loading... Please wait...


Why Fragtastic is the Best!

Fragtastic Reef is a REAL store with REAL Customer Service. Shopping online can be frustrating not knowing who is selling out of their basement or garage. Fragtastic Reef is one of the very few REAL fish stores that also sells online, and has a FULL Brick and Motar Retail Store! We not only have a full retail location but also a warehouse with massive selection of inventory in stock, and you can even pickup at our retail location.

Most products on our website are in stock and shipped by us from our retail location.

Be sure to also go to Our Facebook Page and Like Us. We have giveaways, discounts, and specials on there all the time. There is no purchase necessary on our giveaways and prizes. Make sure also to sign up for our Email updates, to keep in the loop with new products and specials we are doing.

You can finally stop waiting on hold with those other online vendors. Fragtastic Reef is open 7 DAYS A WEEK - Because we care about your success and your tank!

Overflow Box PF-1000 - 1000GPH - Hang On - Eshopps

5% Rewards

Spend Over $200 & Get a FREE Gold Membership


Product Description

Eshopps PF-800 Hang On Overflow box is rated for 800 gph and up to a 125 gallon aquarium.  Eshopps overflow boxes are a great option for an aquarium that is not drilled and wanting to setup a sump.  

* Premium overflow boxes for wet/dry aquarium filters
* Effectively transports aquarium water to under cabinet sumps
* Bulkhead fittings allow convenient and secure aquarium plumbing

Quality overflow boxes feature bulkhead fittings for secure and convenient installation. Use these easy-to-install overflow boxes to transport aquarium water to under cabinet sumps, refugiums, or wet/dry filters. Gravity-feed system eliminates the need for complicated drilling or aquarium modifications.

Includes: U-tube, cylinder (round) foam, nylon screw and wing nuts, and pre-filter box. Nano has 3/4" bulkhead, PF-300 - PF-1200 have 1" bulkheads, and PF-1800 has 1-1/2" bulkhead.


Model Dimensions Usage Intake Max Flow
PF-Nano 4" x 2.5" x 8.5" H Up to 20 gallons Single 200 gph
PF-300 6" x 3" x 10" H Up to 75 gallons Single 300 gph
PF-800 8" x 3" x 10" H Up to 125 gallons Single 800 gph
PF-1000 9" x 3" x 10" H Up to 150 gallons Dual 900 gph
PF-1200 10" x 3" x 10" H Up to 200 gallons Dual 1,000 gph
PF-1800 12" x 4" x 10" H Up to 300 gallons Dual 1,600 gph

NEW Replacement Nylon Screw Set includes (2) Wing Nuts, (2) Threaded Screws, and a Thumb Screw. Replace old or worn nylon screw and wing nuts to ensure secure placement of overflow box.

Directions for Use
Assemble the parts making sure that the water exits from the Intake Box through the U-tube and into the Pre-filter Box.

The siphon is started by first filling the aquarium until water flows into Intake Box. Then carefully fill the Pre-filter Box with a cup or two of water. Suck the air out of the U-tube using clear airline tubing (1 ft) until the U-tube is full of water. This is done by bending the airline and inserting it into the U-tube. Be sure the ends of the U-tube are fully submerged so that no air can enter. You may need to add more water to the boxes as you do this. The siphon is now primed and water will automatically reach an even level in both boxes.

NOTE: No air must be allowed to enter the U-tube if the siphon is to be maintained.

If the level of water in the aquarium increases, it will enter the Intake Box and will then siphon into the Pre-filter Box. The water level in the Pre-filter Box will rise until the water flows into the Exit Tube where it will empty into the sump. The main water pump in the sump will then return the water back into the aquarium and continue this cycle. As with any overflow system, it is critical to maintain constant water levels by means of a top-off system or by regular top offs.

Nano Box Overflow Box

To Install Nano Box Overflow Box (Manufacturers Recommendation)

  • Slide a PVC Pipe into the 3/4" ID opening of the bulkhead.
  • Slip the tubing over the opposite end of the PVC pipe.
  • Glue in place to seal.

Product Reviews

Write Review

This product hasn't received any reviews yet. Be the first to review this product!


Limited Time - FREE SHIPPING ON ALL ORDERS OVER $29! Most orders will ship the same or next business day of when you place the order. We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Almost all items on are website qualify for FLAT RATE or FREE shipping! Order over $29 in products and receive FREE shipping on your order.

International Shipping & Orders

We ship Worldwide everyday. Please contact us for shipping quotes and availability on any products you would like to purchase.

International orders do NOT qualify for free shipping, please contact us for a shipping quote.

We only accept Paypal as payment for international orders and customers and must ship to a confirmed address.

Product Warranty

EVERY ITEM WE SELL IS BRAND NEW & COMES WITH A FULL MANUFACTURE WARRANTY! We do not sell used, defective, or returned product to our customers. Only exception to this is in our clearance and open box section of our website. Even those items still include a full warranty, and are usually an amazing deal if your looking to save money!

Most brands and products we sell have typically a 1 year warranty, with some products having up to 3 or more years. If you have any questions on warranties you can check the manufacture website or just contact us with any questions. At we sell only the best products, and only products we recommend and use ourselves, so you can buy with confidence.

We are an authorized dealer and retail partner for every brand we sell!

Find Similar Products by Category

Back to Top