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post #1 of 5 Old 01-03-2012, 03:36 PM Thread Starter
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Question Sponge or Pre filter

I am in the process of setting up my new tank (thanks to everyone for all the help thus far) and have been doing some research on the filtration proccess. I have a two HOB (top fin 40 & Whisper 30) but what I have been reading has been pointing me to a sponge filter of some sort. My tank is 37g and will be filled with zebra danios/glofish, African Dwarf Frog, tetras maybe.

I am willing to buy a sponge filter OR a prefilter. Long term I think I want a canister but it is out of my budget for now. Should I use both HOBs, just the top fin 40, HOB + Prefilter, HOB and sponge, etc?
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post #2 of 5 Old 01-03-2012, 09:50 PM
I believe that there are some prefilters that have sponges in them, or you can jury-rig one yourself depending on the size of the in-take tube. Essentially what you do is get a cylinder-shaped sponge that's hollow, then fit it over the in-take tube of your HOB and voila! You have a sponge filter on your HOB. And usually buying the sponge itself is really cheap, just a few dollars or so.
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post #3 of 5 Old 01-03-2012, 09:54 PM
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Look for a pre-filter for the Fluval Edge. You can find them at Petco/Petsmart for $3 or less and slid right over most intakes. I have one on my AC110 and it looks and works great.

I also +1 sponge filters. I have one in my 20g shrimp tank and I added one to my 75g shrimp tank with plans to add a second. My 40B shrimp tank will likely be sponges too.
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post #4 of 5 Old 01-03-2012, 11:04 PM
+1 on the Fluval sponge prefilter - I use them.

As for a filter upgrade for a 37g, I'd consider the AquaClear or the Fluval C-Series HOBs before a canister as either of these will work really well for you at significantly less cost.
If your heart is set on the canister, work on the (forum) street is that Eheim, Rena, and Fluval in that order are the top contenders.

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post #5 of 5 Old 01-05-2012, 11:49 PM Thread Starter
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thanks for the advise I was looking into the c series as well and liked what I saw. I will also look for the fluval pre-filter.

One last question is there a need for a independent sponge filter to supplement the HOB w/ pre-filter?
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