1" supply line or Modular hose

Bmore88 · 08/18/2016, 07:43 AM

Has anyone ever heard of someone using modular hose instead of PVC for the return line (from pump in sump to Display Tank?)

http://www.modularhose.com/Loc-Line-34-System/34-kits

was considering it, but I think it would be more expensive and reduce flow due to size being 3/4"..

otherwise I am re-plumbing with 1" pvc

Millwright · 08/18/2016, 09:48 AM

I use it in my sump. I have it on the last 10" of my reactor returns.
In my opinion use pvc. Even if your return was 3/4" PVC I would think you would get better flow with the PVC. I say this because in my opinion the increasing and decreasing ID of the lock line over the length of your return would be much more turbulent. Therefore reducing flow. Also as an obsevation my reactor returns are always covered in a ton of salt creep. Whether it is from evaporation in the sump or a tiny amount leaking out between the joints I am not sure.

Bmore88 · 08/18/2016, 09:50 AM

Thanks. Yea I am going to bump up from 3/4 to 1"

any idea how much head pressure a 90 degree elbow adds? I have heard conflicting answers and google isnt giving me anything concrete

mcgyvr · 08/18/2016, 10:13 AM

https://neutrium.net/fluid_flow/pres...head-k-method/

and don't use locline..
Ok for a small section thats in the water but thats really it.. and even then its just another restriction unless you oversize it..

Ou8me2 · 08/18/2016, 10:34 AM

I use Spa-Flex for my return line. It's basically the hose they use for spa's and hot tubs. I got a killer deal on 25ft of 1" for $25.00 in black. It usually is around close to $2.00 a ft and can be used in pvc pipe fittings. I know a lot of people will say use pvc cause it's cheaper. I like it cause from my return pump to my return that I only have 1 -90.

mcgyvr · 08/18/2016, 12:11 PM

Spaflex is nice for returns..
It will reduce the vibrations transferred from the pump too..

LXXero · 08/18/2016, 12:50 PM

i use spaflex too. Is locline even watertight? Like, I'm not sure I'd trust locline to be water tight enough to use it outside of a body of water.

08/18/2016, 07:43 AM	#1
Bmore88 Registered Member Join Date: Jun 2016 Location: Baltimore, MD. USA Posts: 127	1" supply line or Modular hose Has anyone ever heard of someone using modular hose instead of PVC for the return line (from pump in sump to Display Tank?) http://www.modularhose.com/Loc-Line-34-System/34-kits was considering it, but I think it would be more expensive and reduce flow due to size being 3/4".. otherwise I am re-plumbing with 1" pvc

08/18/2016, 09:48 AM	#2
Millwright Registered Member Join Date: Jan 2015 Location: Brunswick, Ohio Posts: 27	I use it in my sump. I have it on the last 10" of my reactor returns. In my opinion use pvc. Even if your return was 3/4" PVC I would think you would get better flow with the PVC. I say this because in my opinion the increasing and decreasing ID of the lock line over the length of your return would be much more turbulent. Therefore reducing flow. Also as an obsevation my reactor returns are always covered in a ton of salt creep. Whether it is from evaporation in the sump or a tiny amount leaking out between the joints I am not sure. __________________ 3rd times the charm. Current Tank Info: Red Sea 425XL

08/18/2016, 10:13 AM	#4
mcgyvr Registered Member Join Date: Sep 2003 Location: North Carolina Posts: 20,050	https://neutrium.net/fluid_flow/pres...head-k-method/ and don't use locline.. Ok for a small section thats in the water but thats really it.. and even then its just another restriction unless you oversize it.. __________________ Who me?

08/18/2016, 10:34 AM	#5
Ou8me2 Registered Member Join Date: Feb 2016 Posts: 743	I use Spa-Flex for my return line. It's basically the hose they use for spa's and hot tubs. I got a killer deal on 25ft of 1" for $25.00 in black. It usually is around close to $2.00 a ft and can be used in pvc pipe fittings. I know a lot of people will say use pvc cause it's cheaper. I like it cause from my return pump to my return that I only have 1 -90. Last edited by Ou8me2; 08/18/2016 at 10:46 AM.

08/18/2016, 12:11 PM	#6
mcgyvr Registered Member Join Date: Sep 2003 Location: North Carolina Posts: 20,050	Spaflex is nice for returns.. It will reduce the vibrations transferred from the pump too.. __________________ Who me?

08/18/2016, 09:50 AM	#3
Bmore88 Registered Member Join Date: Jun 2016 Location: Baltimore, MD. USA Posts: 127	Thanks. Yea I am going to bump up from 3/4 to 1" any idea how much head pressure a 90 degree elbow adds? I have heard conflicting answers and google isnt giving me anything concrete

08/18/2016, 12:50 PM	#7
LXXero Moved On Join Date: May 2016 Location: Colorado Posts: 565	i use spaflex too. Is locline even watertight? Like, I'm not sure I'd trust locline to be water tight enough to use it outside of a body of water.