About top&bottom overflow pipe design

[peong]

Hi Guys,

I have a simple design to make a Top&Bottom overflow pipe for my tank, but really don't whether it will actually works? can someone with more experience give me some advice? thanks!

[chrisyew]

Hi Guys,

I have a simple design to make a Top&Bottom overflow pipe for my tank, but really don't whether it will actually works? can someone with more experience give me some advice? thanks!

Guess if there is a power failure to your return pump, the bottom siphone will such dry your main tank and your sump will be flooded.

[Tanga]

Check out the link

http://www.wetwebmedia.com/pbfaq8mar.htm

[peong]

Tks for the replies, I need more advices, anyone can help?

[rogersoh]

Don't worry about the overflow causing the sump to flood druing power failure as the top of the pipe will create a siphon break once the water level drop below the top opening level.

When the return flow return and water level reach above the outlet the siphon will return and it will function as per normal.

It is a good design go for it.

[peong]

bro rogersoh,

tks 4 ur encouragement. I still not very sure whether it will actually works or not. Wat I'm guessing is, I might need to drive a powerful return pump to make both suction to works, or else, the bottom suction will not b working at all. I'm right?

As the design is really too simple, even I never c anyone ppl using tat b4, maybe is good tat more experts would like to give ur comments to benefit everyone.

BIG THANK YOU!

[colinsoon]

check this out.

http://www.sgreefclub.com/forum/index.php?...low%20pipe&st=0

sorry la, been like repeating myself on the same thing bout boxes over and over again, so a lil.. tired... haha.

can check out my thread in members tank and specs, for a run thru on the overflow box. bro chrisyew was juz asking bout it, and i posted some replys there.

[peong]

Need few more advices fm u guys.

[peong]

Base on this plan, my system work very well. U must hv a power return to let both suitions works or else the top flow will only act as air suition. Thanks for all guys who has contributed ur ideal.

[somebody]

from the way i look at it,

if return pump fails,

water level drops below that horizontal pipe(there's only one), the siphon will break. then, when the pump is switched on again, there will be no siphoning right?

unless... its just acts as a flow... for water to flow out and has no siphoning effect...

think its safer to use the usual overflow design. all the best bro.

[Tanga]

Bro does it give you the gurgling noise and do you cover both end to avoid LS from going into the pipe

[peong]

gurgling noise can easily solved by using a sponge to cover the top hose.

[somebody]

yepz, think it'd most probably work, since its a draining pipe and no siphoning involved.

anyways, i feel that it wouldn't allow water to reach to the top hole, because, once the water reach the level of the horizontal tube, water would be drained out. yea....

[peong]

System is in operation. hehe.. believe me, it works!

[somebody]

fantastic! =)

tried offing the pump to simulate blackout? or pump failure?

as long as it works for you bro! =)

[Cardinal Tetra]

I see no problems with the design, as for pump failure, the diagram doesnt even show the return pump pipe, so what are you guys referring to?

[markietan]

hey looking at your diagram, does it mean that the tank must be drilled ?

[Cardinal Tetra]

The tank must be drilled to avoid using a siphon.

[tan]

y not try my method i post on the other forum(diy overflow system)by this way no need to drill hole on main tank hope this helps

[Morpheous]

I DIY this over flow and it did not fail me

[Morpheous]

So if there is a pump failure, the main tank water cuts off at the interior overflow box. The difference in the height of the pipes keeps the suction / gravity in place. Thus when power is back, water overflows into the box and everything resumes..

[ace1721]

So if there is a pump failure, the main tank water cuts off at the interior overflow box. The difference in the height of the pipes keeps the suction / gravity in place. Thus when power is back, water overflows into the box and everything resumes..

And besides how to start the flow in the overflowbox after the return pump failure?