Petco Undergravel Filters

$10.99 - $14.99

Product Details
  • Keep your aquarium water crystal clear with an undergravel filter system
  • Convenient, trouble-free maintenance
  • Jumbo 1" adjustable lift tubes
  • Includes free filter cartridges

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Keep your aquarium water crystal clear with an undergravel filter system. Two plate filter system.

  • Durable, plastic construction.
  • Convenient, trouble-free maintenance.
  • Power with air pump or powerhead.
  • Jumbo 1" adjustable lift tubes are compatible with most powerheads.
  • Includes two free filter cartridges.


Instructions for Connecting Undergravel Filter Plates

  1. Lay out Undergravel Filter plates before placing in aquarium. This will help you determine which sections require openings.
  2. To open water flow partitions, use pliers to snap vertical seams first. Now fold entire piece towards outside of plate, bending along horizontal seam until it breaks off.
  3. Connect Plate Locking Clips to bottom of plates. Invert and follow remaining assembly instructions.

Easy Set-Up Instructions

  1. Feed air tubes through spout and attach airstone to bottom. Insert cartridge into spout. Insert the spout/airstone assembly into top riser tube.
  2. Insert complete riser tube assemblies into the filter plates. Twist the tube clockwise to lock it in place.
  3. Place completed unit into a clean tank and cover the filter plates with about two inches of washed gravel. Fill the tank with water using a bowl to diffuse the water.
  4. Adjust riser tube so that spout is just below water surface. Attach flexible airline (not supplied) to air tube.

Cartridge: The cartridges supplied with this unit remove harmful gases and odors from the aquarium. They slip easily into the filter spouts with no need to disturb the set-up. For best results, they should be replaced every two to four weeks.

Airstone: An airstone should be replaced when the airflow becomes sluggish. Tank conditions will determine the effective life of your airstones.

Note: With the plates connected, do not use airlift method on one lift tube together with a powerhead on another lift tube. Powerhead may overcome airlift power.

Product Reviews
1 / 5
no replacement cartridge Posted February 6, 2014
Vincesr from Greenwood DE

I purchased the under gravel filter system for the 10 gallon tank. Works great. Now I find out Petco no longer carries the replacement filters. But, they still sell the under gravel system.

1 / 5
No replacement filters Posted January 26, 2014
Tinbender from Redmond Or

I have these in a 15 and 55 gallon tank. The 55 runs power heads but the 15 uses the replaceable charcoal cartridges shown in the picture. Petco does not carry these in store or online. I e-mailed them and they gave me contact information for the manufacturer, but no answer as to why they would sell a filter but not replacement parts you need at least once a month. It just doesn't make sense. I gave it one paw because the product is good, I would have gave it five if I could get the parts to make it usable.

4 / 5
Okay Product Posted October 27, 2013
Ashley89 from Arkansas

I bought this a couple months ago and it works fine my only issue is my tubes need replaced cause they became green and I could not was them out as they do not separate. And still I can not just buy the tubes. I have to buy the whole kit just for the tubes its ridiculous.

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