mega flow ?

arizona tech · 04/05/2011, 01:46 PM

just fired off my tank 90 gallon mag 7 pump 3' rise the sump keeps surging and is making noise like a toliet its a brand new megaflow kit, it quiets down then ramps up i have my water line about 2" above the minimum green sticker, and the durso pipe is that supposed to bee all the way up to the point u cant put a lid on?

Virtuoso · 04/05/2011, 01:54 PM

Sounds like you need to make the hole in the duroso top a little bit bigger. Try running it with the cap on and with the cap off and you'll see what I mean. He should have included 2 endcaps on it so you can do a bit of testing, but I also went to HD and bought some more to test with.

Mine sticks out maybe 1/4 inch above the overflow, maybe a little less.

arizona tech · 04/05/2011, 02:03 PM

i raised the durso pipe and the surging has slowed it still does it but not as frequent, the top of the tee you mean drill and make the hole bigger the like 1/4 size on top of the durso pipe

arizona tech · 04/05/2011, 04:07 PM

pictures

Virtuoso · 04/05/2011, 04:08 PM

Yeah, that piece where the "top" is, water goes down one way but there is a little bump at the top with an end-cap on it. You need a small hole in there to make it flow even. It is mentioned at the top of the page here - http://www.dursostandpipes.com/make-...wn-diy?start=2

arizona tech · 04/05/2011, 04:11 PM

in the 3rd and 4th pictures the piece has a hole in it it runs quiet for a few minutes then it becomes kinda like air bound

MarkGP · 04/05/2011, 05:37 PM

I used to run my durso much lower than that. I kept the vent hole about 3 inches below the teeth in the overflow. That helped a lot with the surging.

James77 · 04/05/2011, 06:18 PM

That dip then bend upwards in the drain hose is probably the cause of it. Water is bulding up in there and then causing a siphon.
You need the drain line to slope always downward, even if it is just slightly.

Try holding the drain hose in a full downward slope with no areas going upward, and see if it stops.

jasonssandiego · 04/05/2011, 11:39 PM

I had the same problem with the exact same equipment. I used a gate valve and set it at 50 percent on the pump. It's completely quiet now. I now changed it to a mag 3 with no problems.

arizona tech · 04/06/2011, 05:48 AM

first i shortended the return pipe as james mentioned, it made the rushing worse,the mag 7 pump is loud i guess i have to put a gate valve in the supply line i feel like i should not have to

stingythingy45 · 04/06/2011, 07:26 AM

Don't drill your MegaFlo,please.
It already has a hole on the side and top(factory).

stingythingy45 · 04/06/2011, 07:31 AM

Looks way too high.
The nipple on top is almost level with the top of the overflow wall in my 90 gallon.
And it's a silent as a church mouse.

stingythingy45 · 04/06/2011, 07:33 AM

Ah ha,that drain line(blue flex hose) bent like that is acting like a trap.
Straighten that,even if you have to cut it and your problem will be gone.
BTW,do you know that bioballs eventually become a nitrate factory?

James77 · 04/06/2011, 09:06 AM

I didn't say shorten, I said that dip needs to be out of there. The reason it is gurgling/ flushing is because it is starting a siphon and drawin the water out of the mega flow, when it runs ou of water it makes it gurgle. That drain line needs to always be slanting downwards, the water backing up is hat starts the siphon. The hole in the top will also help prevent it.

Were it steady noise you were dealing with it would be a different cause.

Scott B · 04/06/2011, 09:16 AM

Maybe too much flow?? Do you have a valve off of the return? try gating it down

sasharotty · 04/06/2011, 09:26 AM

Quote:

Originally Posted by stingythingy45

Ah ha,that drain line(blue flex hose) bent like that is acting like a trap.

This is your problem, cut the hose for a straight shot.Also i do agree though that durso looks a wee bit high.My air hole was level with the trim of the tank.

stingythingy45 · 04/06/2011, 09:36 AM

Not sure if you can cut that hose and still attach it securely.
But,definitely get the bend out of there.

Palting · 04/06/2011, 09:54 AM

I had the same problem, with the exact same sump. Three things can cause this "surging".

1. Too much return flow. I don't think this is your problem, as the Mag 5 puts out 350 gph at a 3' head and your drains are rated at 600 gph max return.
2. Return pipe (the one with the nipple in pic 3 & 4) is too high. Yours is too high. Need too get that lower, with the top of the tee at about the height of the bottom of the teeth of the overflow.
3. Up and down track of the flexible drain hose. This creates a cycle of air trapping, and the surging. You have to position that hose such that is is a gentle continuosly downward course.

Here are some pics from my previous set-up:

NO GOOD:

BETTER (put clips, though

):

One more thing. I don't like those stainless clamps. The screws will rust. I use plastic cable ties, like these:

JBOD77 · 04/06/2011, 12:56 PM

just had the same problem... i drilled out the hole in my pipe to 1/4". Actually i ended up cutting it off flush and then drilling to 1/4" and it's level with the frame of my tank. Dramatic difference in noise. My tank to hard plumbed to a basement sump but i had the same toilet noise.

arizona tech · 04/06/2011, 04:27 PM

i did push the dip out of the pipe and the noise got worse, i went to the lfs and he could not believe that i am having issues with a 90 gallon tank and a mag 7 pump so this is what i did and now all i hear is the hum of the pump

WestChesterReef · 04/06/2011, 11:18 PM

my 90 has the mega flow, the drain is well below the tank edge, underneath my drain hose is looped, quiet as can be and I'm running a brand new mag 9.5 and could probably get away with a 12. and stingythingy45 is right, get those bio balls out of there

Palting · 04/07/2011, 07:56 AM

LOL! You made the loop even bigger, and it's quiet? Shows you what we know! LOL!

WestChesterReef · 04/07/2011, 07:59 AM

Mine is a complete loop, with a mag 9.5 and as quiet as it gets

http://i255.photobucket.com/albums/h...r/100_8063.jpg

04/05/2011, 01:46 PM	#1
arizona tech Registered Member Join Date: Aug 2005 Location: south elgin Posts: 342	mega flow ? just fired off my tank 90 gallon mag 7 pump 3' rise the sump keeps surging and is making noise like a toliet its a brand new megaflow kit, it quiets down then ramps up i have my water line about 2" above the minimum green sticker, and the durso pipe is that supposed to bee all the way up to the point u cant put a lid on? Last edited by arizona tech; 04/05/2011 at 01:51 PM.

04/05/2011, 02:03 PM	#3
arizona tech Registered Member Join Date: Aug 2005 Location: south elgin Posts: 342	i raised the durso pipe and the surging has slowed it still does it but not as frequent, the top of the tee you mean drill and make the hole bigger the like 1/4 size on top of the durso pipe Last edited by arizona tech; 04/05/2011 at 02:15 PM.

04/05/2011, 04:11 PM	#6
arizona tech Registered Member Join Date: Aug 2005 Location: south elgin Posts: 342	in the 3rd and 4th pictures the piece has a hole in it it runs quiet for a few minutes then it becomes kinda like air bound Last edited by arizona tech; 04/05/2011 at 04:17 PM.

04/05/2011, 06:18 PM	#8
James77 Registered Member Join Date: Aug 2005 Location: Rhode Island Posts: 8,158	That dip then bend upwards in the drain hose is probably the cause of it. Water is bulding up in there and then causing a siphon. You need the drain line to slope always downward, even if it is just slightly. Try holding the drain hose in a full downward slope with no areas going upward, and see if it stops. __________________ Jim Current Tank Info: 120g Mixed Reef and 75g Freshwater Last edited by James77; 04/05/2011 at 06:28 PM.

04/05/2011, 11:39 PM	#9
jasonssandiego Registered Member Join Date: Nov 2007 Location: San Diego Posts: 87	I had the same problem with the exact same equipment. I used a gate valve and set it at 50 percent on the pump. It's completely quiet now. I now changed it to a mag 3 with no problems. __________________ Experience is the amount of mistakes that we learn from.

04/05/2011, 01:54 PM	#2
Virtuoso Registered Member Join Date: Dec 2010 Posts: 727	Sounds like you need to make the hole in the duroso top a little bit bigger. Try running it with the cap on and with the cap off and you'll see what I mean. He should have included 2 endcaps on it so you can do a bit of testing, but I also went to HD and bought some more to test with. Mine sticks out maybe 1/4 inch above the overflow, maybe a little less.

04/05/2011, 04:08 PM	#5
Virtuoso Registered Member Join Date: Dec 2010 Posts: 727	Yeah, that piece where the "top" is, water goes down one way but there is a little bump at the top with an end-cap on it. You need a small hole in there to make it flow even. It is mentioned at the top of the page here - http://www.dursostandpipes.com/make-...wn-diy?start=2

04/05/2011, 05:37 PM	#7
MarkGP Why do I do this? Join Date: Dec 2005 Location: Bristol, RI Posts: 1,015	I used to run my durso much lower than that. I kept the vent hole about 3 inches below the teeth in the overflow. That helped a lot with the surging.

04/06/2011, 05:48 AM	#10
arizona tech Registered Member Join Date: Aug 2005 Location: south elgin Posts: 342	first i shortended the return pipe as james mentioned, it made the rushing worse,the mag 7 pump is loud i guess i have to put a gate valve in the supply line i feel like i should not have to

04/06/2011, 07:26 AM	#11
stingythingy45 Registered Member Join Date: Aug 2007 Location: MA Posts: 3,296	Don't drill your MegaFlo,please. It already has a hole on the side and top(factory). __________________ Bob Current Tank Info: 90 gallon,mixed Reef,2-250 watt Optix 3 pendants(Phoenix 14K)2-54 watt T5 Super actnics ,ASM G-2 Gate/recirc mods,70 gal. basement sump,20L ref

04/06/2011, 07:31 AM	#12
stingythingy45 Registered Member Join Date: Aug 2007 Location: MA Posts: 3,296	Looks way too high. The nipple on top is almost level with the top of the overflow wall in my 90 gallon. And it's a silent as a church mouse. __________________ Bob Current Tank Info: 90 gallon,mixed Reef,2-250 watt Optix 3 pendants(Phoenix 14K)2-54 watt T5 Super actnics ,ASM G-2 Gate/recirc mods,70 gal. basement sump,20L ref

04/06/2011, 07:33 AM	#13
stingythingy45 Registered Member Join Date: Aug 2007 Location: MA Posts: 3,296	Ah ha,that drain line(blue flex hose) bent like that is acting like a trap. Straighten that,even if you have to cut it and your problem will be gone. BTW,do you know that bioballs eventually become a nitrate factory? __________________ Bob Current Tank Info: 90 gallon,mixed Reef,2-250 watt Optix 3 pendants(Phoenix 14K)2-54 watt T5 Super actnics ,ASM G-2 Gate/recirc mods,70 gal. basement sump,20L ref

04/06/2011, 09:06 AM	#14
James77 Registered Member Join Date: Aug 2005 Location: Rhode Island Posts: 8,158	I didn't say shorten, I said that dip needs to be out of there. The reason it is gurgling/ flushing is because it is starting a siphon and drawin the water out of the mega flow, when it runs ou of water it makes it gurgle. That drain line needs to always be slanting downwards, the water backing up is hat starts the siphon. The hole in the top will also help prevent it. Were it steady noise you were dealing with it would be a different cause. __________________ Jim Current Tank Info: 120g Mixed Reef and 75g Freshwater

04/06/2011, 09:16 AM	#15
Scott B Registered Member Join Date: Feb 2011 Location: Utah Posts: 176	Maybe too much flow?? Do you have a valve off of the return? try gating it down __________________ 150 mixed reef, Skimz skimmer, Aquatic life T5/AI sol blues,Reef Angel controller, Reef breeders wave makers Current Tank Info: 150g mixed reef

04/06/2011, 09:36 AM	#17
stingythingy45 Registered Member Join Date: Aug 2007 Location: MA Posts: 3,296	Not sure if you can cut that hose and still attach it securely. But,definitely get the bend out of there. __________________ Bob Current Tank Info: 90 gallon,mixed Reef,2-250 watt Optix 3 pendants(Phoenix 14K)2-54 watt T5 Super actnics ,ASM G-2 Gate/recirc mods,70 gal. basement sump,20L ref

04/06/2011, 09:54 AM	#18
Palting Registered Member Join Date: Apr 2010 Location: Ohio Posts: 6,912	I had the same problem, with the exact same sump. Three things can cause this "surging". 1. Too much return flow. I don't think this is your problem, as the Mag 5 puts out 350 gph at a 3' head and your drains are rated at 600 gph max return. 2. Return pipe (the one with the nipple in pic 3 & 4) is too high. Yours is too high. Need too get that lower, with the top of the tee at about the height of the bottom of the teeth of the overflow. 3. Up and down track of the flexible drain hose. This creates a cycle of air trapping, and the surging. You have to position that hose such that is is a gentle continuosly downward course. Here are some pics from my previous set-up: NO GOOD: BETTER (put clips, though ): One more thing. I don't like those stainless clamps. The screws will rust. I use plastic cable ties, like these: __________________ Anything I post is just an opinion. One of many in this hobby. Believe and follow at your own risk of rapid and complete annihilation of all life in your tank :) Current Tank Info: Incept 3/2010, 150 RR, 50g sump, 20g fuge, 150w 15K MH x3, T5 actinics x8, moonlight LED x6, 1400gph return, Koralia 1400 x4, 300 g skimmer, 4 tangs, 2 mandarins, 2 perc, 6 line, 3 cardinals, 2 firefish, SPS, LPS, zoas, palys, shrooms, clam

04/06/2011, 12:56 PM	#19
JBOD77 Registered Member Join Date: May 2005 Location: OYSTER BAY, NEW YORK, USA Posts: 176	just had the same problem... i drilled out the hole in my pipe to 1/4". Actually i ended up cutting it off flush and then drilling to 1/4" and it's level with the frame of my tank. Dramatic difference in noise. My tank to hard plumbed to a basement sump but i had the same toilet noise.

04/06/2011, 11:18 PM	#21
WestChesterReef Registered Member Join Date: Mar 2011 Location: West Chester OH Posts: 109	my 90 has the mega flow, the drain is well below the tank edge, underneath my drain hose is looped, quiet as can be and I'm running a brand new mag 9.5 and could probably get away with a 12. and stingythingy45 is right, get those bio balls out of there

04/07/2011, 07:56 AM	#22
Palting Registered Member Join Date: Apr 2010 Location: Ohio Posts: 6,912	LOL! You made the loop even bigger, and it's quiet? Shows you what we know! LOL! __________________ Anything I post is just an opinion. One of many in this hobby. Believe and follow at your own risk of rapid and complete annihilation of all life in your tank :) Current Tank Info: Incept 3/2010, 150 RR, 50g sump, 20g fuge, 150w 15K MH x3, T5 actinics x8, moonlight LED x6, 1400gph return, Koralia 1400 x4, 300 g skimmer, 4 tangs, 2 mandarins, 2 perc, 6 line, 3 cardinals, 2 firefish, SPS, LPS, zoas, palys, shrooms, clam

04/07/2011, 07:59 AM	#23
WestChesterReef Registered Member Join Date: Mar 2011 Location: West Chester OH Posts: 109	Mine is a complete loop, with a mag 9.5 and as quiet as it gets http://i255.photobucket.com/albums/h...r/100_8063.jpg

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