Built-in Overflow Problem

"Jerry Baker" wrote in message news:HgTRg.2552$422.2051@trnddc03...
Pszemol wrote:
Screws underwater might look too "technical" and not pretty.
Glue is more concealed.

Scraping glue off of the inside of an overflow is not something I want
to be doing though.

Aesthetics are up to you, but silicone does not stick to the plastic
as well as it does to glass, so scraping two drops off does not
present too much of a challenge. If you like screws - go for it...
I have seen white nylon screws, but black ones are less common
so I did not even mentioned screw solution before for that reason.

"Jerry Baker" wrote in message news:ddTRg.2549$422.1098@trnddc03...
Wayne Sallee wrote:
Should have bought All-Glass.

All-Glass tanks cost more than acrylic tanks. There's no way I was going
to pay over $700 for a drilled 125 gallon tank.

Well - they are designed for reef tanks with much more circulation in mind.
They usually have at least two overflow in corners, sometimes one more
in the center and allow you to have thousands of gallons per hour flow...

You do not need this in a freshwater tank, so you should be good with what you got.

"Jerry Baker" wrote in message news:%fTRg.2551$422.228@trnddc03...
Wayne Sallee wrote:
What makes you think that you have reached the limit?

Because any increase in flows causes the drain to gurgle constantly as
the air tries to bubble up through the falling water. Inserting air line
into the drain doesn't help. The water occupies all of the sir space in
the pipe until the air burps out.

Look up the "durso" keyword. Allglass tanks come with nice durso pipe.
This pipe does not gurgle as much as the typical one...
You can buy guts to the Allglass overflow as a separate kit.
It might match your tank holes.

Jerry Baker wrote:

The pump is a cheapo Rio 1700 (650gph).

If you're only pumping that much water, you're nowhere near the limit a 1" pipe
can handle. Double the capacity of your pump.

George Patterson
All successes in conservation are temporary. All defeats are permanent.

Pszemol wrote:
Look up the "durso" keyword. Allglass tanks come with nice durso pipe.
This pipe does not gurgle as much as the typical one...
You can buy guts to the Allglass overflow as a separate kit.
It might match your tank holes.

I have a Stockman pipe on there now that I constructed mysel.

Then you have not reached the limit. Look up "durso stand
pipe"

Wayne Sallee
Wayne's Pets



Jerry Baker wrote on 9/25/2006 12:14 PM:
Wayne Sallee wrote:
What makes you think that you have reached the limit?

Because any increase in flows causes the drain to gurgle constantly as
the air tries to bubble up through the falling water. Inserting air line
into the drain doesn't help. The water occupies all of the sir space in
the pipe until the air burps out.

"Jerry Baker" wrote in message news:4CTRg.8376$Wi1.737@trnddc06...
Pszemol wrote:
Look up the "durso" keyword. Allglass tanks come with nice durso pipe.
This pipe does not gurgle as much as the typical one...
You can buy guts to the Allglass overflow as a separate kit.
It might match your tank holes.

I have a Stockman pipe on there now that I constructed mysel.

Watch for the internal pipe diameter in DIY projects...

Have you used thin-walled PVC or regular SCH40?

SCH40 1" pipe has very thick wall - its internal diameter,
where water flows, is similar to thin-walled 3/4 pipe.
Replacing regular schedule 40 pipe with thin-walled
one and THE SAME OUTSIDE diameter will make a big
difference in the amount of water the pipe can handle.

You have no pressure up there, so using pipes rated
at 250PSI does not make too much sense...

Your Rio 1700 pump at the 4 feet hight delivers only 325 gph
Your 1" overflow should handle a much more!

My Quiet One 3000 delivers about 600 gph at 4 feet and my 1"
Durso stand pipe from Allglass is handling it with NO PROBLEMS.

Pszemol wrote:
Have you used thin-walled PVC or regular SCH40?
SCH40 1" pipe has very thick wall - its internal diameter,
where water flows, is similar to thin-walled 3/4 pipe.
Replacing regular schedule 40 pipe with thin-walled
one and THE SAME OUTSIDE diameter will make a big
difference in the amount of water the pipe can handle.

The pipe is 1.5" connected to the 1" bulkhead with a reducer bushing.

Wayne Sallee wrote:
Then you have not reached the limit. Look up "durso stand pipe"

I already have a Stockman pipe. See my responses to pszemol.

"Jerry Baker" wrote in message news:0HURg.3296$Vk4.2531@trnddc01...
Pszemol wrote:
Have you used thin-walled PVC or regular SCH40?
SCH40 1" pipe has very thick wall - its internal diameter,
where water flows, is similar to thin-walled 3/4 pipe.
Replacing regular schedule 40 pipe with thin-walled
one and THE SAME OUTSIDE diameter will make a big
difference in the amount of water the pipe can handle.

The pipe is 1.5" connected to the 1" bulkhead with a reducer bushing.

This reducer will be a bottleneck of your system...
Unless it is from the thin-walled irrigation pipe system.
Check its internal diameter. Think of it as half-open valve.

Anyway - your pump at the hight of the tank delivers little
over 300 gph (asuming there are not 90' elbows on the way).
This is way below what 1" bulkhead can handle, my friend.

Look at the weak points of your durso/stockman pipe design.