Shadow Overflow

16″ Shadow® Overflow V3 2500 GPH

16″ Shadow® Overflow V3 2500 GPH

Regular price $249.99 USD

Regular price ~~$249.99 USD~~ Sale price $249.99 USD
Unit price per
63mm Diamond Holesaw Bit

63mm Diamond Holesaw Bit

Regular price $19.99 USD

Regular price Sale price $19.99 USD
Unit price per
Shadow® Overflow Spacer Ring Kit

Shadow® Overflow Spacer Ring Kit

Regular price $24.99 USD

Regular price Sale price $24.99 USD
Unit price per
Replacement Weir for 16" Shadow Overflow

Replacement Weir for 16" Shadow Overflow

Regular price $25.99 USD

Regular price Sale price $25.99 USD
Unit price per
1.5" Clic Clip for PVC Support

1.5" Clic Clip for PVC Support

Regular price $15.99 USD

Regular price Sale price $15.99 USD
Unit price per
35mm Diamond Holesaw Bit

35mm Diamond Holesaw Bit

Regular price $19.99 USD

Regular price Sale price $19.99 USD
Unit price per
Overflow External Pipe Kit 1.5" PVC (All Colors)

Overflow External Pipe Kit 1.5" PVC (All Colors)

Regular price $24.99 USD

Regular price Sale price $24.99 USD
Unit price per
Overflow Internal Pipe Kit 1.5" PVC (All Colors)

Overflow Internal Pipe Kit 1.5" PVC (All Colors)

Regular price From $24.99 USD

Regular price Sale price From $24.99 USD
Unit price per
Overflow Loc-Line® Return Kit for Aquariums

Overflow Loc-Line® Return Kit for Aquariums

Regular price From $14.99 USD

Regular price Sale price From $14.99 USD
Unit price per

Let customers speak for us

from 114 reviews

Great Product

Works flawlessly for my 310gal aquariums. Only need one gate valve to fine tune the sound out of the drain. Quality product. Highly recommend.

Seth P

16″ Shadow® Overflow V3 2500 GPH

10/14/2024

Great ATO container

I am very pleased with my ATO container. It holds a goodly amount of RO water.

Steven Bender

15 Gallon ATO Containers (44-60-72 Series)

Excellent Sump at Fair Price

So I ordered a RM 34 roller mat sump that needed to be cut down to a 32”. It came in about a month and it was shipped extremely well. It took me hour to bag up all the peanuts from packaging. :) It looks amazing and while I have not installed it yet (waiting on tank) I am certain it will perform just fine! My only thought is I wish the acrylic was a little thicker but overall very happy.

Chad Z

Synergy Reef® RM-34 Red Sea ReefMat or Clarisea Sump (Rollermat)

10/10/2024

Quietest overflow system!

I've been using the overflow for over a year now and am really enjoying the very low noise the box is outputting altough I am running a lot of flow through it! Surface skimmer is perfect and cleaning is very easy. Great design!

Steeve Messier

09/16/2024

Good product

Good an consistent construction, easy to assemble. And thr dimensions from the website were accurate.

Jose De La Cruz

09/11/2024

Great overflow

I installed this over flow on my 240 Gallon (2 X 2 X 8) tsunami aquarium. I have it plumbed into my Synergy Reef CL-60. Everything runs great. My only regret is not getting the option to replace the filter socks with a roller mat. I had to cut my CL-60's filter sock section to accept my roller mat.

Bill Goff

08/30/2024

Very nice unit

Randy Holt

08/29/2024

Socks and silencers

The socks and silencers are great like I expected. Knew I wouldn’t be disappointed since I have had a great experience with my synergy reef sump and overflow. Thanks!

Cory Berry

Synergy Reef Filter Sock Silencers V2

05/22/2024

Sump

this is by far the sexiest thing I have seen. A++++
Will recommend to all my reef friends.

John Hammond

Synergy Reef® CL-34 Aquarium Sump

05/10/2024

Large and in charge

Originally purchased the 5 gallon reservoir from Synergy REEF and it was great, but only got me to mid week until I had to fill it again. This 10 gallon reservoir can keep my 168 gallon open top peninsula topped off all week.

Quentin Smith

10 Gallon ATO Containers (44-60-72 Series)

05/03/2024

V3 Overflow

Bought this for my new 75gal reef tank. Have yet to install but first impressions is that it is a very quality piece. Super excited to get the tank drilled and the water flowing. Ordered the bits to drill for the box as well as the return lines. Great value and shipping was very quick.

Joe Bisconer

04/04/2024

Looks great and functions great

Not much to say! Great reservoir. I have 2 pumps feeding into two different tanks from this reservoir and it’s serving its purpose, probably the best looking reservoir in the market.

Andre

5 Gallon ATO Containers (26-34 Series)

03/26/2024

Beautifully built. Amazing quality.

It’s a beautiful piece of equipment. Definitely will buy from again.

Greg Baugher

02/22/2024

Great Ato

Great ato reservoir. I went with the black and green. Didn’t even hide it under the stand it looks so nice.

Robert Peter

02/13/2024

V3 overflow

I like the quality of the V3 build. Its fits perfect on my 180. No negative feedback from me

Nicholas Gaston

01/19/2024

Item added to your cart

Collection: Shadow Overflow

16″ Shadow® Overflow V3 2500 GPH

16″ Shadow® Overflow V3 2500 GPH

63mm Diamond Holesaw Bit

63mm Diamond Holesaw Bit

Shadow® Overflow Spacer Ring Kit

Shadow® Overflow Spacer Ring Kit

Replacement Weir for 16" Shadow Overflow

Replacement Weir for 16" Shadow Overflow

1.5" Clic Clip for PVC Support

1.5" Clic Clip for PVC Support

35mm Diamond Holesaw Bit

35mm Diamond Holesaw Bit

Overflow External Pipe Kit 1.5" PVC (All Colors)

Overflow External Pipe Kit 1.5" PVC (All Colors)

Overflow Internal Pipe Kit 1.5" PVC (All Colors)

Overflow Internal Pipe Kit 1.5" PVC (All Colors)

Overflow Loc-Line® Return Kit for Aquariums

Overflow Loc-Line® Return Kit for Aquariums

Let customers speak for us

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