I recently aquired a used sump that has 5 holes drilled in it. I only plan on using 2 of the 5 holes. After looking at the prices of bulkheads, I was wondering if there is any other way of closing up the holes that I don't need other than putting bulkheads and plugs in.
thanks
PS: If anyone knows of a store to buy bulkheads that is not so expensive, please let me know 