Fry Tank Filter Help

[blueboy1]

So, I'm setting up a fry tank for my guppies but there is no filter I have suitable, I don't really want to go our a buy one so I need ideas please.
Can I use a price of filter media spong with a hole in and a air pump flowing through? I've seen others use this I think but I don't know how it works or how it would actually filter.
Can you put a cover on a filter like a tight or something so Ty aren't sucked in?
All help very appreciated, thanks Dom

 

[TwoTankAmin]

The most commonly used fry tank filters are sponge filters. They are powered by an air pump. They act as both mechanical and bio-media. They need to be carefully rinsed out in either tank water removed to a bucket or in dechlorinated and somewhat temp. matched tap water.
 
You can use other filters such as a power filter or and internal, but it is important to have a pre-filter sponge over the intake and to be able to keep flow low enough for fry.
 
The sponge will also trap excess food and you will often see fry (or other fish when presented with similar opportunity) pecking at the sponge. they are actually using ist as a snack bar.
 
I tend to use either an ATI Hydro Sponge Pro Filter and/or a Poret foam filter.

 

[blueboy1]

So could I literally just use a 5" piece of spare filter spong washed in tank water with a ring cut halfway into it with an air tube stone in that ring pumping bubbles through the filter sponge, and this will clean the tank how?

 

[TwoTankAmin]

No that is not what a sponge filter is. You need an air uplift tube:
 

The airline runs down the tube an attached to a piece inside. The bubbles rise up the tube and opull the water alonge, This means the water enters they tube by ciimung in through the sponge.
 
You can see Porets here http/www.swisstropicals.com/filtration-shop/cubefilter-shop/