bulkhead holes

[jpond83]

does anyone know how to close them up or seal them if not being used anymore?

[Joshua]

Is it threaded on the inside, if so teflon tape and a PVC plug.

[jpond83]

it is, i never noticed that thanks, also can you buy bulkheads from home depot?

[prof]

You have to go to plumbing supply houses or aquarium stores to get bulkheads. Ryan Herco sells top notch bulkheads. Just install a bulkhead and use a pvc plug from home depot.