Type of bulkhead (wet side + dry side) - threaded + threaded; threaded + slip or slip

[gregzz4]

Originally Posted by byee

I wasn't able to tighten the 3/4" threaded tube into the bulkhead connector

Do you mean it wouldn't start threading, or it wouldn't actually tighten up ?

I have my standpipes just hand tight for easy removal and with tape on the threads they are easy to remove if needed. With them installed this way I get no leakage - my overflow box does not drain down when the pump is off

Does that help ?