- Joined
- May 10, 2019
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- 30
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So I am drilling my new tank and plan on having 2 overflows with 1 return (never done a drilled tank before, just over the top overflow). Do I have to have an overflow on the outside of the tank, or can I do everything with an internal surface skimmer box? I plan to leave one bulkhead open (with a scream), then use a 90 elbow with a short stand pipe for the emergency drain. Is this going to work, or do I need to do this in an outside the tank box? Just trying to do everything right I attached a diagram of what I have in mind, I am not an artist.