overflow sump HELP
so i plumbed it for the return and the larger 2" overflow i just figured the 1" bulkhead was so the tank could be drained completely.... till i put my finger in the hole and realized theres no cap/or threading....
so stupid question...... whats it for??
should i just put a 1" tube through it as a double overflow?
the sump is set up so it goes... from tank - skimmer - bubble trap- mechanical- live rock - return pump-tank
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