Drilling fish tank

[peeweehuynh]

Hey mfk, so I am looking at drilling 2 holes into my new 200gallon fish tank. Only issue is that i'm not sure how big of a hole I should request being cut. It's 200g fish tank so im trying to get a 6x turn over which would be1200gph. What size hole would i have to make and size of pvc bulkhead? Anybody know this? Thanks.

 

[BIG-G]

I hope there isn't a problem with posting from another forum. There are calculators to the left of the page that will tell you everything you could want to know about flow rates, here http://www.reefcentral.com/
just plug in the numbers and hit calculate.

 

[peeweehuynh]

I hope there isn't a problem with posting from another forum. There are calculators to the left of the page that will tell you everything you could want to know about flow rates, here http://www.reefcentral.com/
just plug in the numbers and hit calculate.

Thank you!!

 

[guano]

That tank looks awesome! What are the dimensions on that beast?

 

[aldiaz33]

Even though you are only looking to achieve 1,200 GPH (which a 1.5" drain can handle), I would recommend going with a 2" drain. If you ever decide you want more flow, with a 1.5" drain you are stuck. If you go with 2", you can run 1,200GPH without any problems and all the way up to 2,400GPH.

I would also recommend having the holes drilled to accommodate schedule 80 bulkhead fittings, which are slightly larger than the standard (cheap-o) bulkhead fittings. The schedule 80 bulkheads are much less prone to leaking and I've never seen one crack (whereas I've seen lots of cracked bulkheads of the standard variety).

For a 2" schedule 80 bulkhead fitting, the hole should be 81mm (3.18"): http://www.bulkreefsupply.com/bulkhead-schedule-80-thread-x-thread-2.html

Good luck.

 

[BIG-G]

Thank you!!

your welcome. Just remember its better to over size a little that way its easy to up the filtration if you decide to later.

 

[peeweehuynh]

That tank looks awesome! What are the dimensions on that beast?

Thanks! dimensions are 7ft long x 3ft wide x 20inches tall.

 

[peeweehuynh]

Even though you are only looking to achieve 1,200 GPH (which a 1.5" drain can handle), I would recommend going with a 2" drain. If you ever decide you want more flow, with a 1.5" drain you are stuck. If you go with 2", you can run 1,200GPH without any problems and all the way up to 2,400GPH.

I would also recommend having the holes drilled to accommodate schedule 80 bulkhead fittings, which are slightly larger than the standard (cheap-o) bulkhead fittings. The schedule 80 bulkheads are much less prone to leaking and I've never seen one crack (whereas I've seen lots of cracked bulkheads of the standard variety).

For a 2" schedule 80 bulkhead fitting, the hole should be 81mm (3.18"): http://www.bulkreefsupply.com/bulkhead-schedule-80-thread-x-thread-2.html

Good luck.

Thank you for the advice ! all of this information does help out. I'm going to go with a 2" drilled hole and most likely get that bulkhead off that website.

 

[peeweehuynh]

So far I've drilled the output of the tank and decided to go with 2" bulkhead. Ill be sure I keep you guys updated.View attachment 854985


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[peeweehuynh]

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