hi i was just wondering how i keep the copper levels down in my saltwater aquarium
Start out by using RO/DI water instead of tap water (if you aren't already). Use this water for both topping off from evaporation and for mixing new saltwater for water changes. There are a few products that will also help absorb copper out of your water, but remember if you medicated with copper it will have absorbed into your coral bed, silicone of the tank and really any porous surface. So you will want to continue to use the media and do water extra changes for at least a few months to make sure you have gotten rid of all of the copper and then keep double checking the levels. One filter media you can try is called a Polyfilter. It is basically a filter pad that you can use in most standard hang on the back filters or canister filters and can cut them to fit. Polyfilters will turn colors when they are absorbing different chemicals (I think green for copper). Seachem also makes a copper absorbing media called CupriSorb. You place them in a filter media bag and put them in your filter system where water can pass by them (like a canister filter or hang on the back filter).
