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Old 05/10/2004, 06:59 AM
john rochon john rochon is offline
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Join Date: Dec 2001
Location: canada
Posts: 1,666
It all depends on the brand. there not all the same. Its always best to buy your bulkheads first. on the average its normaly 1/2'' larger and you'd probaly get more responce in the DIY forum as this is usually for people with existing tanks. cheers.