Is there a special type of filter used on the hex tanks other then just the hang on back type? With AC using it beyond trying to remove meds from a tank is really a matter of preference. A lot of more experienced members on this forum have said that they don't use it in their tanks on a regular basis. I have gone back and forth with it really, but ended up keeping it in my tank because of the Prime I use to treat my water. From what I've read, once you add Prime (I've read this with Amquel+ as well) whatever isn't used to handle the toxic chemicals in your water just stays in the tank waiting till there are some toxins to bind with. While that is how it is supposed to work, since I'm not cycling I don't need to bind up that much of my ammonia or nitrite anymore because the good bacteria have that covered. The AC is said to remove even these left over chemicals from the tank, so I figure rather then let them build up in the tank (since I add more with each water change anyway) I would let the AC help remove them. Yeah I'm probably wasting my money, but the added AC gives me a little more comfort about my water quality. So again, it's a matter of preference.With our other filter media we can easily add new AC, but is there a way to do that with the filter media in the 5 gallon hex tanks? (or is it not important?)
Here is what I use to replace the purchased filter cartridges that contain the activated carbon.
I get the big blue bonded pads and cut the piece to fit the space I need to fill. In the Hex tanks you can make a lot of filters out of a pad. I have used them for a long time and the only time I use the carbon filters that are factory made is when my tanks get smelly or are medicated and need to have the medications removed, but I would not even need to do that as all you need to do is put a layer of carbon between two layers of the blue bonded material and you have a carbon filter so you really do not need to have the premade filters. I just do it that way by preference.
Hope this helps.
. It adds an extra level of bio filtration and I can change out my filter media without working about having to seed another pad. Right now their 24 pack is on sale for $30.39 and they usually charge a base shipping of around $9.99. Also they don't increase the shipping price per item but rather based on how much money you spend. So I can usually buy a whole bunch of things and still pay the $9.99 shipping.