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Red Devil Hang On Canister Filter

4.3 out of 5 stars 21 customer reviews
| 4 answered questions

Currently unavailable.
We don't know when or if this item will be back in stock.
  • Size: 30 Gallon

Currently unavailable. We don't know when or if this item will be back in stock.

Product Description

RD-30G Features: -Filter Placement:Internal -Filter Type:Canister. Dimensions: -Overall Height - Top to Bottom:11 -Overall Width - Side to Side:6 -Overall Depth - Front to Back:6 -Overall Product Weight:3.5

Product Details

  • Product Dimensions: 6 x 6 x 11 inches ; 3.5 pounds
  • Shipping Weight: 3.5 pounds
  • ASIN: B008L43CXY
  • Item model number: BC003429
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (21 customer reviews)
  • Amazon Best Sellers Rank: #176,240 in Pet Supplies (See Top 100 in Pet Supplies)
  • Product Warranty: For warranty information about this product, please click here

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By DUSTY on November 24, 2012
Verified Purchase
I bought this filter about 2 weeks ago because I was looking for the cleaning ability of a canister filter and the ease of filter maintenance of a hang on the back filter. This filter was very easy to set up and all the media comes with the filter. The compartments will make adding the media that I desire, down the road, a snap. Priming the filter the first time took me a few tries but once I realized you have to make sure the top seal is very tight I was good to go. Because this is a new filter design from Aquatop I did call their help line to ask a few questions about the filter and they were easy to reach, kind and helpful on the phone. Water flow seems very good, even after 2 weeks of running. The filter runs so quiet I was not sure it was even on until I saw the water flow. I would say this is a perfect filter for a 20 or 30 gallon tank.
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Verified Purchase
I have a lot of experience with filters and fish. I usually use a canister filter system but this time I had a small (20gallon) fish tank so I decided to just use a Hang-on-tank filter. I went through about 4 of the crappy filters with the spinning wheel and where you load cartidges from the top. They are horrible and costly. This filter works perfect and is a true (small version) canister filter. You can setup your own media the way you like it. Buy this and do research on how to properly setup media in a canister filter and you will never have a dirty tank. Of course, make sure you are using it with the right size tank
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UPDATE: 4/12/15 - I had recently noticed that the RD-30G has been discontinued by AquaTop, however the RD-PRE is still
being produced. I know that some fish keepers were using the RD-PRE with power heads, instead of the RD-30G for greater
circulation.

However, the RD-30G was a very good filter for the money. And the fact that it is only one of a handful of HOT canister filters
on the market should have ensured its success. Anyway, I am glad that I purchased mine when I did, and at the discounted price
of $19.95 each...

UPDATE: 9/25/14 - The water flow on the RD-30/RD-PRE combo that I use on one of my planted aquaria was greatly reduced after having run this filter for four months, so I took the canisters apart to clean them.

The RD-30 was actually quite a bit dirtier than the RD-PRE, which shows that the 30 does a good job of absorbing much of the detritus that is filtered through its media compartments.

Several people have complained of how difficult it is to open the media trays for
the RD-30, and this has been my experience as well. I lift off the top tray which is easy to do, then open one side of the rest of the trays in order to rinse the media. I remove the mechanical media and I just rinse the biological media while it's still in the tray before reinstalling the media tray in the filter chassis.

The RD-30 (especially with its RD-PRE companion) really does work quite well, and for a more than reasonable price.

UPDATE: 9/9/14 - I have been running a pair of the AquaTop RD-30 filters on two of my planted aquaria for several months now (one with the RD-Pre attachment) and
like them very much.
Read more ›
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Verified Purchase
Fantastic. Buy two or three of these pull all the media trays fill them with what ever you need placing the media in MECHANICAL, BIOLOGICAL and CHEMICAL order. Then hook them to a power head and your done. I look at it as an expandable canister filter that you can expand to meet your needs.
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UPDATE: Mr. Aqua has discontinued the RD-30G and the RD-PRE, so finding them NOS is going to be
difficult. However, the same filters are manufactured by a few different companies (all likely from Taiwan)
under their own names. Can't remember the names off hand here, however, if you Google AquaTop RD-30G
you will likely find them. They are sold through venues such as Ebay and Amazon.com

Earlier...

There are two caveats with the RD-30G and RD-PRE that someone contemplating purchasing these filters should consider before actually buying them.

The first is that these filters are impossible to prime unless you fill the water right to the top of the canister (to the point where it's about to flow over the edge of the canister).

The second is that the media trays in these canister filters are interlocking and nearly impossible to separate.

The answer is to get a pair of scissors and cut clasps that hold the trays together, so that trays can be
removed independently from the RD-30G.

When adding the RD-PRE pre-filter to the RD-30G, this filter doubles the filtering capacity of the RD-30G. I have used this combo on a Mr. Aqua 17.1 gallon aquarium, and was very effective l at keeping this tank clean. I also used it in combination with a Marineland 350 and a Cobalt Aquatics DUO 500 UV sterilizer.

If you find these units on sale on Amazon or Truaqua.com you'd best snap them up while you can, because for the money you won't find a better filter on the market. They are cleverly designed, well made, and do a great job of filtering your aquarium water.

The RD 30G is rated for up to 30 gallon tanks, and the pre-filter doubles this capacity to a full 60 gallons.

I paid $35 for the pair and liked them so much that I purchased another pair for the same price.

Well worth the money and highly recommended, even if you have to pay a bit more for them.
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