View Full Version : Sponge Filters or Under Gravel??

09-07-2009, 07:29 AM
I was wondering if you use a sponge filter do you leave it exposed or can it be partially covered or completely covered by the rocks or gravel. Will it work the same?

I was just curious because I have seen many people have mentioned sponge filters in their posts.

Another question; which would be better a sponge filter or under gravel filter for my tanks? I have three 10 gallon tanks: two are divided and one is a community and right now I am using Whisper In-Tank filters. But I want something different that does not take up so much space.

Any suggestions?


09-07-2009, 02:36 PM
I like HOBs and canisters!They are silent.
I find the bubbles from the sponge filters to be noisy!lol
Under gravel filters work great if you have reverse flow power heads to run them.I can't stand them though.Too much debris gets caught under them and really mess up your perameters.I tossed mine many years ago!

Lady Hobbs
09-07-2009, 02:39 PM
Sponge filters are too tall to cover with gravel. You can hide them behind a plant or piece of wood. For a 10 gallon I would use a hang on the back. Perhaps an Aqua Clear so you don't have to buy any more filter inserts.