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Old 02-04-2017, 04:25 PM   #1
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Bulk head question....

Hello all,

I'm thinking about getting a 10 ish gallon tank and drilling it to allow for a sump without going over the rim. My question is..... What size bulkheads/holes and piping or hoses should I use for the drain and the return. I'm inclined to think the drain should be larger but I don't know for sure. If anybody has any suggestions I'd love to hear them. Thanks in advance!
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Old 02-04-2017, 04:40 PM   #2
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Yes, the drain should be larger (could be the same size if there are multiple drains). I know there's a chart floating around with recommended hole diameter sizes relative to flow. If I find it, I'll post it.
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Old 02-04-2017, 04:46 PM   #3
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Most are 1" out 3/4 back in.
For a 10g that would be more then enough IMO.
I believe 1" out flows aprox 700 GPH? maybe a hair more...
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Old 02-04-2017, 04:59 PM   #4
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Awesome! Thank you all, I was actually looking more towards the 1" out and 3/4" in after a little more research!
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Old 02-13-2017, 11:44 PM   #5
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Ok change of plans.... I found someone with 2 30 gallon tanks for 40.00, and that's hard to pass up! What size in and out bulkheads would you all suggest? Also, return pump size? Heater wattage?
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Old 02-14-2017, 06:55 AM   #6
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You are going to use the same size bulkheads in most cases.
Just more if more flow is needed..That being said my 120 and 180g only had 2 out and 2 in so you should be fine.
As for pump you need to figure in head pressure/loss and then how much flow.
I ALWAYS oversize the pump and use a valve after the pump to control flow if needed.
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