I'm planning on building two external overflow boxes on my new tank. I want to use 50mm pipe for the overflow. Should the hole then be 50mm or are the connectors bigger, say 52mm? I want the correct size drilled when I order the glass.
I have the same question with the return. What is the normal size of a return line for a 4000-5000 lph return pump, 25mm or 32mm? What should the hole size be for that?
I have the same question with the return. What is the normal size of a return line for a 4000-5000 lph return pump, 25mm or 32mm? What should the hole size be for that?
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