over flow pipe

[jun]

if after gettin the flow, can i remove the top up pipe ( the one with the cap) and place the cap to the T-elbow???

[rogersoh]

Don't understand your question. If you can provide a simple diagram then I would be able to know what will the impact be. Without the diagram I may give the wrong feedback.

[helldust]

if after gettin the flow, can i remove the top up pipe ( the one with the cap) and place the cap to the T-elbow???

if you are refering to removing the whole length of pipe including the end cap, the overflow will not work. becos water will come out from the T-joint. however if you mean just replacing the end cap with a T-joint, then this can be done.

[tan]

anyway to reduce the noise?

[helldust]

anyway to reduce the noise?

you can either move the skimmer body lower into the water or make/ replace the end cap into another with a hole on it (hole size have to estimate - too small the overflow will not auto-restart, too large the noise will still be there).

[tan]

thks anyway, guess noise would reduce but still able to drive me crazy as i intended to place my 3footer in the bedroom.

[searching4dan]

hi i have problems with my overflow tube/pipe!

i place it in the water>..

nuttin flows out..

is there sumthing esle i shld do before i place it into the water??

can sumbody enlighten me please??

attach is my overflow tube/pipe

[searching4dan]

sorry forgot to resize pic!

check this out

[drmikelangelo]

youll need to prime it for the water to flow. to prime it, pour water into the pipe attached to the tee located outside the tank

[searching4dan]

did that! pour water into the Tee joint outside rite?! but still it did not kick start the flow

can cannot one help me??

[helldust]

did that! pour water into the Tee joint outside rite?! but still it did not kick start the flow

can cannot one help me??

did you seal the output with an end cap before filling the pipe with water?

only release the end cap when the pipe is totally filled with water, this will kick start the overflow piping.

[searching4dan]

WAIT. let me clarify 1st!

am i doing wat u guys suggested?

ok i place an end cap @ the bottom output pipe

i pour water from the water

however, water only occupies the Blue area which i have drawn

the yellow portion seems empty

OK, after i have pour in the water with the end cap ON..

wats next??

pls advise? as nuttin has happen!!

thanks

[helldust]

ok let's do it step by step:

1. ensure the part labelled 1 is inside the tank

2. attach an end cap to the end labelled 3

3. filled up the pipe with end labelled 2. using either filled it with water or suck water until you taste the salt water (preferred method).

4. immediately cover part labelled 2 with another end cap.

5. remove the end cap at part labelled 3.

6. the siphon should start. Remove end cap at part labelled 2 when a full siphon is achieved (indicated by very high flow rate).

however your siphon does not have the skimmer portion, therefore it might drain your main tank dry (caution).

[tan]

try cover the top hole (the one for siphonic effect) then use water pump to push water from bottom hole(the one for out put)after when u see a little or no bubbles at all from pipe in main tank(the one that surpose to draw water) at these point,release the pump and water will start flowing.remember to remove the top cap immediately after u release the pump.i tried mine and the flow is superb!btw if everything works fine ,can update me the noise level?.....cheers

[searching4dan]

ok, as referred to helldust!

i did wat u say step by step

BTW, i add the skimmer part! so my main tank will not be suck dry! hehe..

ok. the water kick started.. water flow very fast out with the end cap placed @ 2 (as labelled by u)

however, once i remove the end cap, water is greater reduced by 50%..

my worries are.. will the water get cut off all the sudden?

as the flow rate isn't as strong..

2ndly is, say once my pump malfunction,

and the overflow will auto cut off as the water level is below my skimmer mark.. then once i start to pump water again,

do i need to kick start the overflow system again?

or will it auto flow by itself once the water level exceeds my skimmer mark, and flows into my skimmer????

abit confusing.. but do u get wat i mean??

as for TAN.. the noise water is alrite

i only hear my pump running..

[helldust]

ok, as referred to helldust!

i did wat u say step by step

BTW, i add the skimmer part! so my main tank will not be suck dry! hehe..

ok. the water kick started.. water flow very fast out with the end cap placed @ 2 (as labelled by u)

however, once i remove the end cap, water is greater reduced by 50%..

my worries are.. will the water get cut off all the sudden?

as the flow rate isn't as strong..

2ndly is, say once my pump malfunction,

and the overflow will auto cut off as the water level is below my skimmer mark.. then once i start to pump water again,

do i need to kick start the overflow system again?

or will it auto flow by itself once the water level exceeds my skimmer mark, and flows into my skimmer????

abit confusing.. but do u get wat i mean??

as for TAN.. the noise water is alrite

i only hear my pump running..

Glad that you able to get it working.

actually the trick is replace the end cap labelled at 2 with another one with a hole drilled into it.. you really need trial and error to find the optimal size, too size the siphon will not be able to restart, too large the overflow will be noisy. once you find the perfect size, the flow will be high as compare to removing the entire end cap.

quite unlikely to cut off the overflow due to flow too slow (din really tried out so cannot confirm).

you dun not need to restart the overflow as it will restart by itself once the pump starts to run again. (but important factor is the hole size at 2). check you have precaution measures for back flow from your pump return piping.

[tan]

hi helldust,can i say that even with a hole drilled at 2, there is still certain level of noise?pls advice.

[searching4dan]

ok, umm.. wat i did was i install a ball valve to regulate the output

so i can play with the flowrate.. (noise level so minimum)

however i kept my end cap (w/o drilled holes) seal on part2,

as this way provides the maximum flowrate..

so my method is kinda, "the suction gravity" method

as i need to sux the water to kick start the flow everytime..

it wun auto restart! (tested and it juz wun restart)

ANYWAY...

once i remove my end cap, the flowrate is greatly REDUCED by 50% or more!

i try many methods from taping up the end with only millimetres of openings

but still the flowrate is the same! (SLOW) no matter the hole is big or small!

hence my pump (input) is drawing water faster then the output..

Pls advice?

[colinsoon]

what diameter pipe are you using? cos a 20mm pipe will only handle approximately 1200l/hour with the cap opened. i am using a 25mm pipe for my tank now, and with the cap on, the pipe is able to handle 4000l/hr. without the cap, it handles around 2500l/hour without the problem.

with regards to the part of the pipe where you suuck, depending on where your water level is inside the strainer. the level will be mirrored in that pipe. unless the water level is below the t junction, it is not wise to remove the pipe, as it will overflow out from the t junction without a care in the world...

[jun]

ok, umm.. wat i did was i install a ball valve to regulate the output

so i can play with the flowrate.. (noise level so minimum)

however i kept my end cap (w/o drilled holes) seal on part2,

as this way provides the maximum flowrate..

so my method is kinda, "the suction gravity" method

as i need to sux the water to kick start the flow everytime..

it wun auto restart! (tested and it juz wun restart)

ANYWAY...

once i remove my end cap, the flowrate is greatly REDUCED by 50% or more!

i try many methods from taping up the end with only millimetres of openings

but still the flowrate is the same! (SLOW) no matter the hole is big or small!

hence my pump (input) is drawing water faster then the output..

Pls advice?

w/o drilled holes(no auto restart) , u not afraid tat if there is a power failure in the middle of the nite, and when the power comes back.. ....flooded?

[searching4dan]

umm.. ok i am using a 1/2 inch pipe! ard 16MM i guess..

the flow rate i could not determine how much per hour by just looking

haven reach that level! hehe..

ya! i am worried it will flood my house!

lol.. but will drilled hole.. the flow rate is small! and slow!

then my pump will be too strong..

are u suggesting i change a bigger pipe??

[helldust]

umm.. ok i am using a 1/2 inch pipe! ard 16MM i guess..

the flow rate i could not determine how much per hour by just looking

haven reach that level! hehe..

ya! i am worried it will flood my house!

lol.. but will drilled hole.. the flow rate is small! and slow!

then my pump will be too strong..

are u suggesting i change a bigger pipe??

16mm will be too small, that's why you got a small flow rate when replace the end cap with a drilled one. suggest you change the piping size.

as a rough gauge: 3FT tank uses 20mm piping 4FT tank uses 25mm piping.

you have to replace the end cap with a drilled one inorder for the overflow to be able to auto-restart. you have to play ard with the skimmer with the water level and the drilled hole size.

if the hole is too small, air cannot enter the pipe as fast to maintain your siphon, the overflow cannot restart by itself.

[searching4dan]

16mm will be too small, that's why you got a small flow rate when replace the end cap with a drilled one. suggest you change the piping size.

as a rough gauge: 3FT tank uses 20mm piping 4FT tank uses 25mm piping.

you have to replace the end cap with a drilled one inorder for the overflow to be able to auto-restart. you have to play ard with the skimmer with the water level and the drilled hole size.

if the hole is too small, air cannot enter the pipe as fast to maintain your siphon, the overflow cannot restart by itself.

[colinsoon]

16mm will be too small, that's why you got a small flow rate when replace the end cap with a drilled one. suggest you change the piping size.

as a rough gauge: 3FT tank uses 20mm piping 4FT tank uses 25mm piping.

you have to replace the end cap with a drilled one inorder for the overflow to be able to auto-restart. you have to play ard with the skimmer with the water level and the drilled hole size.

if the hole is too small, air cannot enter the pipe as fast to maintain your siphon, the overflow cannot restart by itself.

i would feel that 20mm pipings are for 2 ft tanks, 3ft tanks should have 25mm pipes, and 30mm would be a good size for 4 ft and above.

i use 25mm for my 3 ft tank, quite promising results..

[helldust]