It is a AIO thus no bulkhead.
AIO are not for the highly specific reef tank with a lot of equipments. In a “proper” reef tank, because of the amount of support equipments the bulkhead drain to the sump where all the support equipment go.
If you want bulkhead just get an empty aquarium with overflow and bulkhead instead of a AIO.
It would be a lot cheaper, rather than get an AIO then wish for bulkhead a not use anything that come with it.
AIO are not for the highly specific reef tank with a lot of equipments. In a “proper” reef tank, because of the amount of support equipments the bulkhead drain to the sump where all the support equipment go.
If you want bulkhead just get an empty aquarium with overflow and bulkhead instead of a AIO.
It would be a lot cheaper, rather than get an AIO then wish for bulkhead a not use anything that come with it.