PVC Overflow For A 75g Tank Help Please!!

[AnDr3w]

I am building a pvc overflow for a 75g tank. Just like the one on the sticky.

1. How tall does the pvc contraption have to be?

2. Is it loud? It's 10 feet from my bed. Is there a way I can get it very low sound or soundless?

3. How wide pvc shouldn I go with? 1.25"?

4. How many gph am I looking for?

NEXTLY...
I am running an Eheim 2215 on the tank also. I already have it on so there is no reason to take it off. I rather have it running then sitting in the closet ya know? So can I get these questions answered please?

 

[AnDr3w]

SOMEONE HELP MEEEEEEEEEEE!!!!!!!!!!!!!!!!!!! : [

 

[Derpeder]

Some of your questions are answered in the sticky .... also read through the link to the other forum. This is what I have read.

1. I don't know the height

2. Some people say there's gurgle and others are totally quiet. If yours gurgles some have capped the vent and just drilled a hole to release the air.

3. Most every has been using 1 1/4".....

4. I don't know the turn over either.

Hope this helps a little. I'm planning on building one within the next few weeks and then I'll know more.

 

[AnDr3w]

ok thanks. More imput from others please!!!

 

[ethnics]

there usually not to loud. my tanks are 2ft from my bed... and the heights you gotta play with all depending on what design of an overflow you go with.

 

[AnDr3w]

Right but what would be a good estimate height for me though?

 

[spoofsjsc]

Here you go. Hope it helps.

Height
if your planning to duplicate the white one on the sticky, your highest point is the U that goes over your tank wall. the next is the open ended tube. The one with the elbow will be the water level.
Construct from the U first. This is the one that hangs on your tank wall. Determine the length of pipe needed... how deep you want it to go down inside the tank.
Attach the U (the low U that is inside the tank)
Determine your water level and cut the pipe length needed from the U going up to the water level desired.
On the outside of the tank, the same process is repeated with the T (in my case, i used a Y connection) but make sure the T-connection is higher than the U inside the tank. this is to keep it from loosing its siphon.

Noise
This is secondary. You need to make the overflow pipe work first and then worry about the noise if ever.
The level of noise actually depends on how much you can stand. Mine can be regarded as noisy by some but i don't mind.
If you find yours noisy, attach a U to the open ended pipe. this can aim the noise at the floor or inside the tank. Or... get a looong pipe and extend it all the way to the ceiling.

Pipe size
depend on your pump. I use a 2" overflow even though my pump only flows 1200 lph. there is no harm in using a bigger size pipe. If you decide to upgrade to a stronger pump, a bigger sized pipe has more chances of handling the change. I will soon upgrade to a stronger pump (probably 1800 or 2400 lph) and i'm pretty sure i my overflow can handle it.

GPH
Are you talking about your overflow's gph? or your pump's? Your overflow only flows approximately what the pump returns.
You ideally need a pump that delivers about 3-5 times turnover / hour. You've got a 75 so a 350 gph pump would suffice.

EHEIM
Your tank could use that extra help. Your right to leave it on.

Good Luck!

 

[AnDr3w]

I thought the highest point was the open part the has an open end?

and

With the 350g pump, would that make it all the way up to the top of my tank from all the way from in the stand?

 

[spoofsjsc]

I thought the highest point was the open part the has an open end?

and

With the 350g pump, would that make it all the way up to the top of my tank from all the way from in the stand?

I thought the highest point was the open part the has an open end?
-that is the safest way of doing it. my open part is lower because i know for a fact that my water level inside the drain would'nt even reach pass the t-connection.


With the 350g pump, would that make it all the way up to the top of my tank from all the way from in the stand?
- Yes, it can pump back up. but always keep your doors open when talking about upgrading your motor. It all boils down to what flow rate are you satisfied with. pumps' flowrates are reduced by a good number of reasons:
distance upward, length of hoses, other obstacles (dirt, etc), wear and tear, and so on.

 

[AnDr3w]

For the return to the tank should I use pvc again or something else you think? Like should it be that flexable plastic like on syphons?