Improving Top Fin Filters

deadhead324

AC Members
Apr 17, 2011
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So as many of you already know, Top Fin does not make the highest quality filter, but they come in all of the starter kits you buy at Petsma*t. Well, I bought one of these kits (a 15 gallon) along with an AC30, but wanted to try to use the Top Fin filter as well. However, I realized that I would have to overcome many of the problems that others (including myself with a previous Top Fin filter) have faced.

The 1st step was reducing the noise of the filter. Because this tank is in my bedroom, I needed this filter to be as quiet as possible so that I could sleep without headaches from the filter. Unfortunately the Top Fin is a bit louder than my AC30 (which as many here know, is as close to silent as HOB filters can be), so it was tough competition. I noticed however that if I removed the lid that came with the filter and replaced it with the top of my AC30 filter, the Top Fin filter was nearly silent.

The next step was to find a more efficient media for the tank than the pads that are provided. Luckily, the Top Fin filters run on the larger side, so there is plenty of room for different media. I had a couple sponges kept as extras for my AC30, and realized that these were a perfect fit for the Top Fin filter, so I placed them in there. When I placed one on top of the other horizontally however, there was still some water running over the top of the last sponge, so instead, I placed 1 sponge on the bottom horizontally and 3 sponges vertically on top of that.

So instead of going out and having to buy another filter in addition to the AC30, I tinkered with the filter given to me and made it work out very well. I turned an average filter into a filter that is just as quiet as my AC30 and a mechanical filtering powerhouse. I decided to go all mechanical, but there is plenty of room for biological or chemical filtration instead of going all mechanical. While it may not be much money saved because of the size of the aquarium ($15-$25 I think), in situations with larger tanks, this can save someone $40+ (more money spent on your actual fish!) And now for some pics:

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I also have used the AC sponges in "other" filters. I don't use anything for bio or chemical either and the tanks they are on are well-planted. No complaints from me, especially since I can go longer between filter cleanings. I haven't used factory cartridges in a long time and use the AC110 sponges and cut to fit whatever filter it's going into. I also use poly-fiber which literally polishes the water.

The Fairfield brand is marked flame retardant, however it is infused with iron rather than chemicals and I have been using it for filter batting for a few years.

http://www.google.com/products/cata...=X&ei=torETYr2Dsng0QGZsO3vBw&ved=0CGcQ8wIwAA#
 
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nice, I use top fins on my 55 and 37, I' already have AC sponges, but what other media could one put in there?
 
watch how tight you pack the sponges in there, as those cartridge style filters are known to clog media quickly, resulting in water trickling down the backside of the filter box. this i know! almost had that happen to my biowheel hob the other day, due to sponge placement and not checking the media for a while.

i used to run the dual output (two waterfalls) topfin hob, rated for about a 55 gallon (came with my petsmart tank kit), and what i did was take two of the rena xp canister sponges, and stand them up right against the front of the filter box area, with one edge wrapping towards the back a bit (not the edge closest to the middle though, that caused overflowing back into the tank at the intake elbow). worked like a charm, and they didn't clog too fast at all. and the space behind the sponge allowed me to drop in a media bag full of biomax, for extra bio filtration.
 
All my HOB power filters run AC media :) The smallest filters will just have a sponge. If there is more room, I use a sponge and a Biomax insert on top. If they are very spacious, I might add a little bag of carbon (sometimes for a quickie disposable carbon option, I will rubberband a tight little pouch made of a white paper towel with some carbon pellets in there - lasts a surprisingly long time!) or some filter floss. Whenever possible, I like to use "rolled" filter floss rather than the big loose puffs of pillow batting.
 
That's a great value on that foam, Slappy! I like the finer foam too, but if you like coarse foam, the AC foam is some of the coarsest I have seen. It lasts virtually forever...but I personally like to swap out foam every couple of years or sooner, after a while it just gets so dirty and impossible to clean ;)
 
I noticed however that if I removed the lid that came with the filter and replaced it with the top of my AC30 filter, the Top Fin filter was nearly silent.
Cheap filters often times have a problem with the lid not fitting perfectly. If for some reason, you still want to cover your HOB filter (I like to, to keep dust out and to keep my cat from drinking out of the filter!) you can add a little black duck tape around the lip of the filter where the lid is touching, dampening the vibration considerably.
 
watch how tight you pack the sponges in there, as those cartridge style filters are known to clog media quickly, resulting in water trickling down the backside of the filter box. this i know! almost had that happen to my biowheel hob the other day, due to sponge placement and not checking the media for a while.
Haven't used power filters in so long, but I had similar problems when I tried this. Eventually I just ended up buying Bio3 cartridges for my Whisper and Penguin-based filters and re-using those.
 
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