Frag tank drain pitch to sump

neilp2006 · 04/19/2018, 02:39 PM

Hi guys

Taking advantage of some space I’ll have in my soon-to-be basement fishroom to future proof a frag tank. Dimensions are perfect for a 30 breeder, but I’ll probably end up doing a chop-too 40b after a $/g sale. Then I’ll do an internal ctc overflow with the leftover glass, drilling for 2x 1.25” pvc. One drain, one emergency.

The frag tank will sit 9 feet away from the sump (a 125 I drilled 2 holes in for a synergy shadow overflow 2 days before we got told to relocate by wife’s company). As such, I plan to use one of these holes -located in upper middle of a long edge- to drain the frag tank into.

If I go with a 0.5”/ft pitch on the drain, I’ll need the holes in the frag tank to be 4.5” above the hole in the sump. That puts the frag tank top at 52 inches- since the 125 will be on a 29 inch stand - which I can’t change at this point. Stand is made and 2 of the tanks that comprise my sump are in (29g overflow/wc tank and the 125).

Is 0.5”/ft ok? I was aiming at 0.75”/ft but that puts the frag tank too high. Can I go lower, like 0.25?

Thanks

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mcgyvr · 04/20/2018, 10:39 AM

Not sure I see why any downward pitch wouldn't be acceptable..no matter how small with the information given..
As long as the input is higher than the output a siphon will form and the water will drain...

tom obrecht · 04/20/2018, 11:04 AM

I have to agree with the above statement.

neilp2006 · 04/20/2018, 12:36 PM

I guess I’m just overthinking the small details as I wait to piece this all together.

Thanks guys

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mcgyvr · 04/20/2018, 12:47 PM

Quote:

Originally Posted by neilp2006

I guess I’m just overthinking the small details as I wait to piece this all together.

k

Overthinking is good.. Way too many "underthink" now a days IMO..

neilp2006 · 04/20/2018, 12:49 PM

Quote:

Originally Posted by mcgyvr

Overthinking is good.. Way too many "underthink" now a days IMO..

Yeah- don’t think anyone’s going to accuse me of that...

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mcgyvr · 04/20/2018, 01:03 PM

04/19/2018, 02:39 PM	#1
neilp2006 Registered Member Join Date: Oct 2015 Posts: 312	Frag tank drain pitch to sump Hi guys Taking advantage of some space I’ll have in my soon-to-be basement fishroom to future proof a frag tank. Dimensions are perfect for a 30 breeder, but I’ll probably end up doing a chop-too 40b after a $/g sale. Then I’ll do an internal ctc overflow with the leftover glass, drilling for 2x 1.25” pvc. One drain, one emergency. The frag tank will sit 9 feet away from the sump (a 125 I drilled 2 holes in for a synergy shadow overflow 2 days before we got told to relocate by wife’s company). As such, I plan to use one of these holes -located in upper middle of a long edge- to drain the frag tank into. If I go with a 0.5”/ft pitch on the drain, I’ll need the holes in the frag tank to be 4.5” above the hole in the sump. That puts the frag tank top at 52 inches- since the 125 will be on a 29 inch stand - which I can’t change at this point. Stand is made and 2 of the tanks that comprise my sump are in (29g overflow/wc tank and the 125). Is 0.5”/ft ok? I was aiming at 0.75”/ft but that puts the frag tank too high. Can I go lower, like 0.25? Thanks Sent from my iPhone using Tapatalk

04/20/2018, 10:39 AM	#2
mcgyvr Registered Member Join Date: Sep 2003 Location: North Carolina Posts: 20,050	Not sure I see why any downward pitch wouldn't be acceptable..no matter how small with the information given.. As long as the input is higher than the output a siphon will form and the water will drain... __________________ Who me?

04/20/2018, 11:04 AM	#3
tom obrecht Registered Member Join Date: Oct 2004 Location: WI Posts: 3,014	I have to agree with the above statement. __________________ Reef keeping is where Murphy's Law and your bank account collide!! TOTM May 2006

04/20/2018, 01:03 PM	#7
mcgyvr Registered Member Join Date: Sep 2003 Location: North Carolina Posts: 20,050	__________________ Who me?

04/20/2018, 12:36 PM	#4
neilp2006 Registered Member Join Date: Oct 2015 Posts: 312	I guess I’m just overthinking the small details as I wait to piece this all together. Thanks guys Sent from my iPhone using Tapatalk