need a good filter for a 20g full of convict fry

[benzjamin13]

Sponge would be the way to go with fry.

 

[regina111]

You have to watch with some sponges. For some have anti-bacteria chemicals in the that stop the foam from rotten and could be toxic.

 

[zennzzo]

Where would I score one of those big chunky sponges?

Biggest I've seen so far is a painters sponge and that's about the size of a small brick. In the pics I'm seeing of people posting how to make one their's are huge. Like shoebox size.

4 bux...and they are in use world wide...
http://www.ultimatesponge.com/

 

[Dr Joe]

You have to watch with some sponges. For some have anti-bacteria chemicals in the that stop the foam from rotten and could be toxic.

He's talking sponge or foam filters...http://www.thatpetplace.com/pet/product/categoryInfoL3.web?options.passInCategoryKey=22872

Dr Joe

.

 

[WeeNe858]

do a rio 1800 with an exposed impeller for higher water intake just hook up a sponge