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Aquatop MR-30 Media Reactor with Pump

Aquatop MR-30 Media Reactor with Pump

4.8· 5 ratings

Best price now

$98.63at eBayObserved at 1:15 AM

Compared across 6 stores. Prices are checked against each store and labelled with when.

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Our take on the Aquatop MR-30 Media Reactor with Pump

The Aquatop MR-30 is an external up-flow media reactor with a built-in 152 GPH adjustable pump, sized for tanks up to 200 gallons. Its clear acrylic body and recessed O-ring lid let you see media tumbling and swap it without tools. Up-flow design keeps water from channeling past the media, so carbon, GFO or resin gets full contact. At $104.99 at SaltwaterAquarium.com as of November 4, 2026, it sits at the low end of its recent range across the six stores that list it new.

Best forReef keepers running carbon or GFO on tanks up to 200 gallonsOwners who want a pump included rather than buying one separatelySump setups with room for an external reactorBeginners who want visible media and simple lid removal
Pros
  • Pump included and rated 152 GPH, adjustable
  • Up-flow design reduces channeling through media
  • Clear acrylic body shows media tumbling at a glance
  • Recessed O-ring lid comes off easily for media changes
  • Handles carbon, GFO and resin-based media
  • Low 7.8W draw
Cons
  • 23.5 in tall, so it needs a tall sump compartment
  • External only; not designed to sit submerged
  • Small 5.5 in diameter limits media volume per load
  • No media included beyond a sediment discharge filter
  • Corded pump adds a power cord to route

Aquatop MR-30 Media Reactor with Pump prices at every store

  • eBayNew

    In stockSold by aquariumprofessionals

    $98.63Observed at 1:15 AM
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  • SaltwaterAquarium.comNew

    In stock

    $104.99Observed at 1:15 AM
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  • Poseidon's RealmNew

    In stock

    $105.36Observed at 1:15 AM
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  • Chewy.comNew

    In stock

    $108.99Observed at 1:15 AM
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  • WalmartNew

    In stockSold by TruAqua

    $108.99Observed at 1:15 AM
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  • Aquatic MarineNew

    Availability unknown

    $149.99Observed at 1:15 AM
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Also available at

  • eBayCheck price at eBay
  • AquatopCheck price at Aquatop
  • Fish Tanks DirectCheck price at Fish Tanks Direct
  • Pets WarehouseCheck price at Pets Warehouse
  • Aquatica SuperstoreCheck price at Aquatica Superstore
  • The Fish RoomCheck price at The Fish Room
  • The Hidden ReefCheck price at The Hidden Reef
  • TruAquaCheck price at TruAqua

Aquatop MR-30 Media Reactor with Pump price history

Lowest price we've seen: $98.63 on Nov 4 at eBay. Tracked across 13 stores since Nov 4.

What reviewers say

Ratings are high but thin: 4.8 out of 5 from 5 ratings. Owners of similar Aquatop reactors generally report steady media tumbling and easy cleaning, with the usual complaints about size and pump noise.

Pros
  • Easy lid removal for media swaps
  • Visible media movement through the clear body
  • Quiet, low-power pump
Cons
  • Tall footprint in tight sumps
  • Pump flow needs tuning to keep light media from blowing out

Specifications

Filtration Capacity
50-200 Gallons
Product Type
Media Reactor
Tank Size
Up to 200 gallons
Water Type
All Water Types
Animal Type
All pet life stages
Compatible With
Resin-based media, Carbon, Phosphate sponges
Media Type
Phosphate sponges
Filtration Method
Up-flow filtration
Media Included
Sediment discharge filter
Filtration Highlights
Easy to Remove Lid with Recessed O-ring
Material Type
Acrylic
Efficiency
Prevents water from channeling through the filter media
Flow Rate
152 GPH (adjustable)
Installation Type
External
Maintenance Type
Replacement, Cleaning
Height
23.5 in
Length
16.51 cm
Width
5.5 in (diameter)
Power Requirements
Corded Electric
Wattage
7.8

Questions and answers

Is the MR-30 worth it compared with a bare reactor?
At $104.99 at SaltwaterAquarium.com as of November 4, 2026, it includes an adjustable 152 GPH pump. A bare reactor plus a separate pump often costs more, so it is a reasonable value if the 23.5 in height fits your sump.
What size tank is it for?
Aquatop rates it for 50 to 200 gallons. On smaller tanks, dial the pump down so media tumbles gently rather than boiling.
What media can I run in it?
Carbon, GFO and resin-based media all work. It ships with a sediment discharge filter, not carbon or GFO, so budget for media separately.
Can it sit inside the sump?
No. It is an external reactor, so plumb it outside the water with the pump feeding it. Keep the lid accessible for cleaning.
How often do I need to change the media?
Carbon is usually swapped every two to four weeks and GFO when phosphate starts climbing. The clear body lets you see when media clumps or stops tumbling.
When is it cheapest?
Six stores list it new, and $104.99 as of November 4, 2026 is near the bottom of its recent range. Watch for holiday sales at marine specialists for the lowest price.
Where is the Aquatop MR-30 Media Reactor with Pump cheapest?
At eBay, for $98.63, as of our latest check.
What do buyers say about the Aquatop MR-30 Media Reactor with Pump?
Rated 4.8 out of 5 from 5 ratings.
Where can I buy the Aquatop MR-30 Media Reactor with Pump?
13 stores we checked sell it, including eBay, SaltwaterAquarium.com, Poseidon's Realm, Chewy.com, Walmart.