I talked to OFL because she's done some studies on carbon... She said that it doesn't release toxins back into the water but it does become ineffective after awhile, so I was not too concerned about changing the cartridge because I was not trying to remove any meds or anything from the water.
Will the carbon remove anything the rust left behind? I'm afraid that that decoration was in there for a month and a half before I realized it had exposed metal. Do you think it'd be a good idea for me to do another 50% change as well as add another filter cartridge? He has been kind of losing color, and becoming kind of see-through.. But I had thought it was because of his age.
I took the decoration out last night during the water change and posted a thread asking about rust and what I should do now, but I didn't really get any replies so I just messaged you :p You and Sakura always have an answer for me, lol..
He already seems to be doing better as of today, though.
Ewww yeah that can definitely cause issues. Glad you took it out. How's the fish that was in the tank with it?
Well.. I can't remember what filter you're using but carbon has to be replaced every 1-4 weeks (manufacturer should say how long the carbon lasts) and it's always goodto run two forms of media in your filter or else you restart your cycle every time you replace the cartridge. Then you should only replace one media at a time.
There was a decoration in there that had metal sticking out. It was covered with paint so it looked like it was part of the decoration, but I noticed brown stuff on it... I took the decoration out and tried scrubbing it off and the paint came off and I realized it was metal. The decoration is not in the tank anymore, needless to say.
Well the only place you'll see rust is on the metal in the tank that is rusting, but once that rust happens it will release toxins into the water you won't be able to see with your eyes. Do you have metal in your tank?