filters

[craig_will2513]

hi all iam quite new to salt water.. can someone help.. i have an external filter and i am wondering what media to put in it.. what type of sponge ceramic rings bioballs carbon that sort of thing. and anyone help please

[carey]

Hi. what size tank and what filter?

I use the foam pad, carbon and biomedia rings for filters.

[craig_will2513]

hi its only a 23g tropical tank i want to turn salty. its just got the standard filter. but if i took out the media and replace it what should i use