Originally Posted by
pablos
I did a lot of research as well before making my sump. After all I decide to have only one big chamber for K1 media. So basically I have your option 3 but with combined chamber 2&3 and only k1 there. I found k1 extremely effective. I don’t know for how long I should be running without water change to see some nitrate level.
In first chamber I have 3 socks. It takes maybe 5–6 day to cloge. I take them out and put into washing machines down replace with a fresh pair.
It takes 5 minutes.
BTW Aeration won’t drop your co2 level