Marineland Emperor w/ Bio-Wheel

Regularly: $87.49
Eligible for free e-certification with purchase

10% promotional discount applied. Cart total will reflect savings.



Buy 2 or more, each at $70.87
Buy 3 or more, each at $69.29

In Stock. Usually Ships within 24 hours.

Quantity discount will reflect in cart.

Shipping weight = 5.25 lbs.


Sometimes, manufacturers require that products be advertised only at their suggested prices. When we choose to sell these items for less, we display the sale price only in the cart. To see the price, click Add to Cart.

Product Summary:

The Marineland Emperor 400 Filter is designed with advanced technology that effectively and efficiently provides all three necessary filtration elements - mechanical, chemical, and most importantly, biological filtration for both freshwater and saltwater aquariums. Mechanical filtration traps solid debris like uneaten food and fish waste in the dense microfiber insert. For chemical filtration, each cartridge is packed with Black Diamond Premium Activated Carbon. The filter also includes two refillable media containers that can hold an additional amount of Black Diamond Carbon, White Diamond Ammonia Neutralizing Crystals, or Diamond Blend. The patented BIO-Wheel is the best biological filter, as it serves as the ideal culture site for the growth and proliferation of beneficial bacteria responsible for nitrification in aquatic environments.

The Emperor 400 features a revolutionary two pump design. They send water in two different directions through the filter to provide balanced filtration. The Flow Pump routes water through the filter cartridge which provides mechanical and chemical filtration. The BIO-Pump pressurizes and sends a stream of pre-filtered water through the spray bar to power-drive the BIO-Wheel. The filter also features an adjustable Spray Bar Knob that can be turned up or down to change angle or water flow when feeding.

Size: 16" L x 7"W x 10"H (Great for aquariums up to 80 gallons)

Product Reviews by Customers

Rated 4.7 out of 5 by 3 reviewers.
Rated 5 out of 5 by Great Filters I bought one and liked it so much that I bought another. They filter quickly and very clear. They are easy to take apart and clean. They, at times, tend to get a little noisy, but I have 2 in a 60 gal aquarium. A very good investment! December 29, 2010
Rated 5 out of 5 by Marineland Emperor Filters The best filter available at the present time. I have 3 x 135 gallon and 1 x 150 gallon tank and several smaller tanks anything over a 20 has at least one of these running on it, the only additions I make it is to add a sponge filter, not entirely sure I need one in addition to the Emperors but the tanks get one anyway. Filters do not come any better than this! October 9, 2009
Rated 4 out of 5 by Great Filter This filter works really well. I am using it on a 75 gal. freshwater community tank and it does a great job. The adjustable water flow bars on the bio-wheels is an awesome feature...especially at feeding time. The only complaint that I have is that it is a little my bedroom March 3, 2009
  • 2015-11-27 T10:23:24.854-06:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_3, tr_3
  • loc_en_US, sid_710521, stg, sort_default
1-3 of 3
Browse 1 question and 1 answer
Hide answersShow all answers | Sort by
Why did you choose this? Store
Purchased before and works great, have new larger aquarium
JUDY M on Jun 5, 2014