Clear Water Scrubbers CW-300


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Recommended Volume: 400 gallon 

Dimensions: 19"L x 10.5”W x 14"H 

Screen Dimensions: 11.5” x 10.5​” 

Recommended Flow: 600 GPH 

Input Barb Size: 1/2" 

Main Drain Bulkhead: 1" 

Emergency Bulkhead: 1/2" 

Power Consumption 100W @ 120VAC

For Installation Instructions Go To:


Make algae and nitrate problems a thing of the past with

Clearwater Algae Scrubbers!

Algae scrubbers are the most efficient method of organic filtration available to the

aquarium hobbyist. The ultra-efficient design used by Clearwater Scrubbers use high

powered LED lights to grow algae at a rate many times faster than a traditional

refugium, which drastically reduces nitrate and phosphate levels.


Clearwater Scrubbers operate by moving large volumes of water over a rough and

highly illuminated screen. This spurs on rapid algae growth, as algae grows it consumes

nutrients in the water such as Nitrate, Phosphate, Ammonia, and Ammonium. These

nutrients not only drive the growth of nuisance algae, but also contribute to sickness in

fish, and a myriad of other problems in invertebrates and coral. The algae scrubber

provides a single spot got algae growth inside of the filter, instead of in your tank while

also, drastically improving water quality.

Why Clearwater Scrubbers?

Our highly efficient design utilizes lights with a spectrum tuned to maximize algae

growth, in addition to this, by providing both sides of the screen with their own high

power LED growth light Clearwater Scrubbers provides twice the filtration capacity of

similarly, priced options. Our design is also simple to operate, with an easy to remove

screen and simple setup, clearwater scrubbers can be set up with ease by even the

most inexperienced of hobbyists. Your Clearwater scrubber also saves money over its

lifetime by reducing the need for costly supplements such as GFO and Carbon, while

also reducing the number of water changes needed to maintain pristine conditions.

Clearwater Scubbers can easily pay for themselves within the first year of use. Since

every tank is different, Clearwater Scrubbers makes 4 sizes of algae scrubber to ensure

the needs of every hobbyist are met, regardless of tank size or bioload.

Improve water quality, save money, and reduce maintenance

by adding your Clearwater Scrubber today!



Clear Water Scrubbers products (“Product”) are warranted to be free from defects in

materials or workmanship for one (1) year from the date of purchase from an authorized dealer of

Clear Water Scrubbers products (“Warranty Period”). If a defect in the Product arises within this

Warranty Period, we will, at our sole discretion, repair or replace any components that fail in normal

use. Such repairs or replacement will be made at no charge to you for parts and/or labor, provided

that you shall be responsible for any transportation charges. Replacement products may be new or

refurbished at our discretion.

This warranty does not apply to: (i) cosmetic damage, such as scratches, nicks, stains and

dents; (ii) consumable parts, such as LED lights, unless product damage has occurred due to a defect

in materials or workmanship; (iii) damage caused by accident, abuse, misuse, water (in excess of

specifications), flood, fire, or other acts of nature or external causes; (iv) damage caused by service

performed by anyone who is not an authorized service provider of Clear Water Scrubbers; (v)

damage because the instructions for use or maintenance of the Product are not complied with; or (vi)

damage to a product that has been modified or altered without the prior written permission of Clear

Water Scrubbers.

Repairs have a ninety (90) day warranty. If the unit sent in is still under its original warranty,

then the new warranty will be the longer of ninety (90) days or the balance of the original one year






OTHERWISE. Subject to applicable law, in no event shall our liability exceed the purchase price

of the model of scrubber purchased.


We have worked very hard to create a unique algae scrubber that we believe you will truly

enjoy using and which will improve the ownership experience of your fish tank. In the rare event

that you are not completely satisfied with our Product, you may return to us any functioning Clear

Water Scrubbers product you purchase from us within 30 days of purchase for a full refund (based

on your method of payment). If you purchased a Clear Water Scrubbers product from a third party,

such party will provide information about eligible returns. For all returns, including warranty

returns, you must pack your Clear Water Scrubbers product in its original packaging and include all

accessories and documentation. We reserve the right to charge for any damage to the Clear Water

Scrubbers product, and missing part fees may apply.

Please contact Clear Water Scrubbers customer service prior to returning any product to

receive a return authorization form and RMA number. You will be responsible for, and pre-pay, all

return shipping charges and shall assume all risk of loss or damage to product while in transit to us.

We recommend that you use a traceable method of shipping for your protection. We will pay for

shipping to return any product to you.

Email us at to obtain an RMA number. Once you have

obtained the RMA number, please send to us your purchased Clear Water Scrubbers product with

the RMA number clearly marked on the outside of the package and on the shipping slip if you

choose to use traceable carriers such as UPS or FEDEX. Shipping fees for returns are your

responsibility. Return shipping instructions and return address will be included in your RMA

document provided by Clear Water Scrubbers.