Building Concrete Sump Under Tank, Need advise please

ravi197699 · 02/18/2018, 06:45 PM

Hello RC, I am building concrete sump under my tank, Slab has been poured in with rebars and now I will drill holes for rebars for cinder blocks and then pour in concrete to build walls. I need to add 2 pcs of 2" pvc pipes to connect the return pumps, Is there any special way to do this or I can just add 2" holes in cinder blocks and run the pipe through the blocks and then pour in the concrete and but I am afraid of leaks. Please I am seeking help or advise, I want to do this right so that I don't face leaks after I seal the sump from inside with water proof coating from Pentair Aquatics.

Thank you in advance,

Ravi

ravi197699 · 02/19/2018, 06:16 AM

no one?

Jcohen9999 · 02/19/2018, 06:45 AM

More questions than answers here from me but have you considered a submersible pump to avoid having to drill the concrete?

ravi197699 · 02/19/2018, 07:38 AM

Thank you Jcohen9999, that is an option. I always used external pump since they deliver more gallons/ hour, I run everything with main pump, I am very sure that running pvc through cinder block is doable but I want to know if there are any special steps I need to follow so that It does not leak, It will be ~700 gallons of water in that sump.

Vinny Kreyling · 02/19/2018, 08:50 AM

Agree with JCohen9999
If you are going that big a Red Dragon pump should be considered as an internal solution.
OR --Abyzz if you can justify it.

Dantique · 02/19/2018, 05:58 PM

Check out info for a "Link Seal". I think you might be able to use 2" link seal. Not sure if they go that small.

ravi197699 · 02/20/2018, 06:23 AM

Thank you Dantique, I just looked at the pictures of link seal but it won't prevent water from coming out, it is good tool to fill gap between the concrete hole and pvc pipe running through the hole so that pvc pipe does not wiggle in there, But I will look into this more.

ericarenee · 02/22/2018, 11:07 AM

Not totally sure what you are trying to do or looking for .

If my thinking is true.... You want a Bulkhead that can span thru a 8 inch block .. My suggesting is to make one.... for a 1 1/2 inch bulkhead. Drill the hole thru the block to accommodate a 2 inch pvc pipe i think OD Is 2 1/4 Check and verify ... Install a 1 1/2 threaded to 2 inch ID Bushing into each end of the 2 inch pvc running thru the block.. Then use two 1 1/2 inch Male Threaded fittings With Rubber seals to seal the hole against the block.. Remember Block is very porous .. You will have to be sure what ever block sealant /epoxy you use is thick around the holes in the blocks..

If this is not what you are asking I am sorry for my Input

Erica Renee...

jwalker314 · 02/22/2018, 01:34 PM

I imagine a local pool installation company would be able to offer some suggestions as this is done all the time for pools

Sharpimage · 02/22/2018, 10:28 PM

Pool companies use, basically a bulkhead without a nut and is epoxied in place.

Deep Reef · 02/23/2018, 09:55 AM

If through a wall use link seal

Sent from my iPad using Tapatalk

02/18/2018, 06:45 PM	#1
ravi197699 Registered Member Join Date: Oct 2011 Posts: 567	Building Concrete Sump Under Tank, Need advise please Hello RC, I am building concrete sump under my tank, Slab has been poured in with rebars and now I will drill holes for rebars for cinder blocks and then pour in concrete to build walls. I need to add 2 pcs of 2" pvc pipes to connect the return pumps, Is there any special way to do this or I can just add 2" holes in cinder blocks and run the pipe through the blocks and then pour in the concrete and but I am afraid of leaks. Please I am seeking help or advise, I want to do this right so that I don't face leaks after I seal the sump from inside with water proof coating from Pentair Aquatics. Thank you in advance, Ravi

02/19/2018, 08:50 AM	#5
Vinny Kreyling Registered Member Join Date: Nov 2002 Location: Miller Place, NY Posts: 7,206	Agree with JCohen9999 If you are going that big a Red Dragon pump should be considered as an internal solution. OR --Abyzz if you can justify it. __________________ 250 gallon mixed reef, 2 Reefbreeder's Photon V 2, Deepwater BLDC 12, DAS EX-3 Skimmer, MTC mini cal, 2-3/4" Sea Swirls, Aquacontroller & 6 Tunze pumps.

02/20/2018, 06:23 AM	#7
ravi197699 Registered Member Join Date: Oct 2011 Posts: 567	Thank you Dantique, I just looked at the pictures of link seal but it won't prevent water from coming out, it is good tool to fill gap between the concrete hole and pvc pipe running through the hole so that pvc pipe does not wiggle in there, But I will look into this more. Last edited by ravi197699; 02/20/2018 at 06:31 AM.

02/22/2018, 11:07 AM	#8
ericarenee Registered Member Join Date: Sep 2013 Location: Louisville Kentucky Posts: 3,110	Not totally sure what you are trying to do or looking for . If my thinking is true.... You want a Bulkhead that can span thru a 8 inch block .. My suggesting is to make one.... for a 1 1/2 inch bulkhead. Drill the hole thru the block to accommodate a 2 inch pvc pipe i think OD Is 2 1/4 Check and verify ... Install a 1 1/2 threaded to 2 inch ID Bushing into each end of the 2 inch pvc running thru the block.. Then use two 1 1/2 inch Male Threaded fittings With Rubber seals to seal the hole against the block.. Remember Block is very porous .. You will have to be sure what ever block sealant /epoxy you use is thick around the holes in the blocks.. If this is not what you are asking I am sorry for my Input Erica Renee... __________________ 240+G Mixed BB Reef tank.. 350 G Marine Pond. And the expensive stuff that runs it. Chic's are for Chic's You silly men Go Fishing or something... Current Tank Info: 240= gal Reef /550 Gallon Saltwater pond 72 G Bay front Tropical aquarium

02/23/2018, 09:55 AM	#11
Deep Reef Registered Member Join Date: Apr 2013 Location: Coral Springs, FL Posts: 1,192	If through a wall use link seal Sent from my iPad using Tapatalk __________________ Deep Reef ~Greg~ 150g DT, (2)AI Hydra 52 HD's, Vertex Omega 150 skimmer, jebao 1200DC main pump, Trigger Systems Sapphire 34 sump, (2) Ecotech WP40wQD, Tunze ATO, Apex Current Tank Info: 150g Reef

02/19/2018, 06:16 AM	#2
ravi197699 Registered Member Join Date: Oct 2011 Posts: 567	no one?

02/19/2018, 06:45 AM	#3
Jcohen9999 Overkill Reefer Join Date: Oct 2003 Location: Syosset, NY Posts: 740	More questions than answers here from me but have you considered a submersible pump to avoid having to drill the concrete?

02/19/2018, 07:38 AM	#4
ravi197699 Registered Member Join Date: Oct 2011 Posts: 567	Thank you Jcohen9999, that is an option. I always used external pump since they deliver more gallons/ hour, I run everything with main pump, I am very sure that running pvc through cinder block is doable but I want to know if there are any special steps I need to follow so that It does not leak, It will be ~700 gallons of water in that sump.

02/19/2018, 05:58 PM	#6
Dantique Registered Member Join Date: Jan 2018 Posts: 27	Check out info for a "Link Seal". I think you might be able to use 2" link seal. Not sure if they go that small.

02/22/2018, 01:34 PM	#9
jwalker314 Registered Member Join Date: Aug 2009 Location: Landenberg, PA Posts: 421	I imagine a local pool installation company would be able to offer some suggestions as this is done all the time for pools

02/22/2018, 10:28 PM	#10
Sharpimage Registered Member Join Date: Jun 2016 Posts: 324	Pool companies use, basically a bulkhead without a nut and is epoxied in place.