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21 Reviews
90% (19)
10% (2)
0% (0)
0% (0)
0% (0)
100% Recommend this product (21 of 21 responses)
By Tim
Carbon filter cartridges for undergravel filter
June 14, 2020
Petguys service and fast shipping make me give this a 5-star rating. Pricing was excellent and shipping was super fast! I hope they keep these cartridge filters in stock.
By Jennifer
Undergravel filters
July 18, 2019
Good product. Helps keep my tank clean longer.
By Lou
Good product and fast shipping
July 7, 2019
Good product and fast shipping. Product arrived faster than I anticipated.
By Art B.
FC-2 Filt-A-Carb
June 27, 2019
Best price and speedy shipping! I highly recommend Petguys!
ProsBest price and fast shipping!
By Carol K.
Great Price, Great Product, Quick Deliver
March 15, 2019
Underground filter parts are not easily replaced. I was very happy to have found PET GUYS. The parts I needed are working well . . . Thanks so Much. You are a Lifesaver!
By Sara
Fish tank filters
April 22, 2018
GREAT product! This was the EXACT replacement filter We we’re looking for. We could NOT find them in any pet store so we checked online and went with these guys. Our order came just as we expected in a timely manner and we are very satisfied and will definitely reorder when we are all out.
By Camille
Penn-Plax Filt-A-Carb Carbon Undergravel Cartridge 2pk
February 26, 2018
Great Value. Order arrived within a few days. They work great. Very, very pleased. Will purchase again in the future.
By Dennis
December 13, 2017
Perfect fit
By Stella m.
Underground filters
July 5, 2017
Very satisfied fast arrival will definitely order again as well as other products.
ProsFast delivery good product .
February 2, 2017
Perfect. Does what they are supposed to do. Water clear as crystal. I also use a whisper filter on the back of aquarium and turn off to feed fish. If I forget to turn outside filter back on then the Penn-Plax undergravel filter keeps water sooooo clear. These cartridges really do the job well. I change these cartridges once every month.
ProsRead above comment
By german h.
Excellent and fast service
January 8, 2017
Will order again from this company
By Bruno M.
aquarium supplies
August 4, 2016
excellent transaction
By Sue
Plymouth, MA
Refill order
September 16, 2015
Very satisfied.
ProsItems came very quickly. Fair price.
By Deputy K.
Chicago, Illinois
Great filter carbs!!
August 26, 2015
These carbs are great because they are very easy to replace & can be purchased at a very affordable price.
ProsQuick replacement, inexpensive, quality product.
ConsGet dirty very fast, don't really last too long.
By James G.
Louisville, KY
Just What I ordered
August 6, 2015
Good Product and pricing.
By Sasha
Cupertino, CA
Amazing product
December 28, 2014
I love these products and penn plax, delivery was very promt, it only took one day, aquarium's water is crystal clear and the under gravel filter does a good job.
ProsGreat product
By Nelson S.
United States
Good value and delivery.
October 31, 2014
Good value and delivery.
By Terri
San Diego, Ca
Searching High and Low
September 2, 2014
I have searched high and low for this item. I am extremely please to know that your company carries this. I am highly satisfied! Thank you
By Chloe
couldn't find them anywhere else
July 18, 2014
This was exactly what I needed for my PETCO under gravel filter. I can't find these anywhere else so I usually stock up and they seem to work well.
By Dave
Durham, NC
Just what I need
April 26, 2014
These are the exact kind of filters I use in my aquarium. They work great.
By Thomas S.
Scottsdale, Arizona.
I was having a hard time finding this item until I saw your website.
September 14, 2012
I made a mistake and ordered the wrong items a few weeks ago. You people shipped me the correct items after I sent you the other ones back. The turnaround was exceptionally fast.
ProsTheitems were excatly what I needed.

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