This may have been covered elsewhere, but I'm currently feeling too lazy to search.
Why would you want to purchase extra cartridges (aside from the initial purchase) if you can constantly refill your cartridges with liquid? Do the cores go bad?
Even if they do, you can buy that fish tank filter stuff to replace the cores. Is it just convenience or am I missing something else altogether?
Why would you want to purchase extra cartridges (aside from the initial purchase) if you can constantly refill your cartridges with liquid? Do the cores go bad?
Even if they do, you can buy that fish tank filter stuff to replace the cores. Is it just convenience or am I missing something else altogether?