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Just_Tim
12-13-2014, 02:01 PM
Looking for two check valves that can be used with return pump hoses. I've had two floods today do to my gfci kicking off. Anyone know where I can pick up the valves in town?

Murfman
12-13-2014, 02:06 PM
Looking for two check valves that can be used with return pump hoses. I've had two floods today do to my gfci kicking off. Anyone know where I can pick up the valves in town?

What diameter? Sump should hold any backflow from main tank. How low in the water are your return nozzles? Drill holes in the top of them to break siphon?

Just_Tim
12-13-2014, 02:09 PM
They are dipped in the tank to make everything quiet and they do have that little pinhole in them. Still back flows every time.

Just_Tim
12-13-2014, 02:10 PM
And the return line is 3/4" I.D.

Murfman
12-13-2014, 02:18 PM
They are dipped in the tank to make everything quiet and they do have that little pinhole in them. Still back flows every time.

Need bigger than pin holes. Drill 1/16" and point them downward, toward the water. Might need to reduce volume in your sump. How high is the water in your sump?

Just_Tim
12-13-2014, 02:19 PM
When I say pinhole I mean the little hole that Marineland does. It's probably 16th already if not larger. The sump return chamber is always just less than half full. Any lower and my skimmer won't run.

Murfman
12-13-2014, 02:24 PM
When I say pinhole I mean the little hole that Marineland does. It's probably 16th already if not larger. The sump return chamber is always just less than half full. Any lower and my skimmer won't run.

how many gallon sump?

Murfman
12-13-2014, 02:24 PM
When I say pinhole I mean the little hole that Marineland does. It's probably 16th already if not larger. The sump return chamber is always just less than half full. Any lower and my skimmer won't run.

does water come out the hole when the pump is running?

Just_Tim
12-13-2014, 02:25 PM
I think it's 35 gallons. It's the biggest Aqueon acrylic sump.

Murfman
12-13-2014, 02:31 PM
I think it's 35 gallons. It's the biggest Aqueon acrylic sump.

1" in a 125 equals about 10 gallons. So in your 300, 1" is about 23 or so gallons of back flow.

Just_Tim
12-13-2014, 02:32 PM
1" in a 125 equals about 10 gallons. So in your 300, 1" is about 23 or so gallons of back flow.

And my LockLine is approximately 1.25" under the surface. Check valve would solve this, no?

yes, unless something keeps the valve from closing all the way. (small snails, algae)

Murfman
12-13-2014, 02:32 PM
Lowes might have them; http://www.lowes.com/pd_79589-34146-P32S+3/4_0__?productId=3351594

Home Depot does too; http://www.homedepot.com/p/Mueller-Global-3-4-in-PVC-Solvent-Weld-Check-Valve-101-604HC/100127314?N=5yc1vZbbl6Z65j

Murfman
12-13-2014, 02:36 PM
What is causing the GFCI to trip?

Just_Tim
12-13-2014, 02:37 PM
Not sure. It's not that old. Could have been a normal surge with the first trip. Second could have been caused by all the standing water in the stand.

Murfman
12-13-2014, 02:42 PM
Not sure. It's not that old. Could have been a normal surge with the first trip. Second could have been caused by all the standing water in the stand.

I honestly think to solve the problem the right way is a bigger sump to catch the water that drains out (close to 35 gallons). You already have about 17 in the sump now so that is 52 gallons. Back flow might work but if it doesn't stay sealed closed, and you are at work, you are going to have a flood.

Just_Tim
12-13-2014, 02:44 PM
I agree but I think I'm stuck with sump that I have. I can't get anything else in the stand with it in place.

Just_Tim
12-13-2014, 02:48 PM
I just raised my nozzles out of the water and checked it. Water still rises over the edge. I'm going to have to take this tank down dammit.

Murfman
12-13-2014, 03:14 PM
Here are the Two 120s that I found; Last number it height.

120 Glass 48 1/2 24 1/2 25 1/2
120 Glass 48 24 24

110 Glass 48 18 30 would fit too.

Levi
12-13-2014, 03:24 PM
big R has spring loaded check valves that are inexpensive

http://mods-n-hacks.wonderhowto.com/how-to/make-super-cheap-one-way-check-valve-0147955/

Just_Tim
12-13-2014, 03:25 PM
big R has spring loaded check valves that are inexpensive

http://mods-n-hacks.wonderhowto.com/how-to/make-super-cheap-one-way-check-valve-0147955/

Thanks man but I think my sump is just too small. Even with removing the return pump back flow from the equation I'm still flooding.

Just_Tim
12-13-2014, 03:39 PM
big R has spring loaded check valves that are inexpensive

http://mods-n-hacks.wonderhowto.com/how-to/make-super-cheap-one-way-check-valve-0147955/

I'm going to try that anyway. If nothing else it will let me lower the LockLine back under the water.

Levi
12-13-2014, 03:48 PM
big R has spring loaded check valves that are inexpensive

http://mods-n-hacks.wonderhowto.com/how-to/make-super-cheap-one-way-check-valve-0147955/

Levi
12-13-2014, 03:51 PM
crappy work computers double posting randomly, anyways put one of these check valves right after your return pump. Obviously do not use a metal nail, rather an acrylic rod or something. Keep in mind that check valves all reduce the capacity of a pumps output.

Just_Tim
12-13-2014, 03:52 PM
Metal? Does it come with metal?