Well, I got my 5 gallon tank yesterday and I have started the slow process of cycling.
But, the filter has one cartridge that has activated carbon in it, and I have read this will take the iron out of the water - thus taking the fertilizer the live plants need out.
So, I need to know what kind of filter media I should use instead. The fiilter box currently has two
filters. One "Bio-fiber" filter that is not supposed to be changed, and the activated carbon that supposedly needs to be changed every 2-4 weeks.
I just want to make sure my plants get the nutrients they need from the liquid fertilizer I have. It has iron in it, and it would be a waste to add it if the filter is going to remove the iron anyway.
Thanks for the help!