So i have a 1.5" hole and a 1.75" hole. The electrical pvc male adapter and the female adapter I got at Home depot are not long enough since glass is thick. Any other way to make a bulkhead? Is there a LFS that sells bulkheads? Do not want to wait for shipping plus if it does not fit I want to exchange fast not wait. By the way I live in Downtown LA if anybody know of close LFS that sell the bulkhead.