Yeah, if you can find a way to secure it there so the water falls on it and through, that would work. But you don't really need any chemical filtration, especially this early. I have an established tank that's pretty well stocked and I never used any chemical filtration. I use Matrix but those just act like small LR chunks. A good skimmer and refugium should be enough for any tank as long as you don't overfeed or overstock and do regular water changes.