|
01/11/2005, 05:44 PM | #26 |
Registered Member
Join Date: Sep 2004
Location: Newark, OH
Posts: 147
|
I aslo think (but not for sure) if you make the whole overflow smaller (not pipe size - Just shorter) it will increase the flow rate
|
01/11/2005, 06:37 PM | #27 |
Registered Member
Join Date: Mar 2004
Location: SE PA
Posts: 334
|
Very interesting. Well thought out though and looks like it would definitely work. Any reason you went with two drains instead of one bigger one (for linear overflow space)
__________________
Brian Current Tank Info: 5.5 Reef in my Dorm, Mushrooms and ric dominated, 15 mixed reef |
01/11/2005, 06:51 PM | #28 |
Premium Member
Join Date: Oct 2003
Location: techno mecca of the south
Posts: 2,017
|
now, you need to cut teeth into it for a strainer and paint it purple with primer to help hide it and it would be super sweet.
If the tests on the spare 10 gallon work well, I will use it on the new 65 instead of drilling it. speakeraddict
__________________
The ocean isn't bare bottomed...although some of the beaches are. Current Tank Info: 15 gallon custom shallow cube |
01/11/2005, 06:52 PM | #29 |
Registered Member
Join Date: Sep 2004
Location: Newark, OH
Posts: 147
|
stabilty on the back and incase one broke siphon you still have the other
and it give you more are to skim the surface |
01/11/2005, 06:56 PM | #30 | |
Registered Member
Join Date: Sep 2004
Location: Newark, OH
Posts: 147
|
Quote:
When it works for you take some pictures for everybody Please |
|
01/11/2005, 07:11 PM | #31 |
Premium Member
Join Date: Oct 2003
Location: techno mecca of the south
Posts: 2,017
|
I shall.
I will take pics after I paint them with primer so they can see the finished product. I think I will start out with the teeth so there are no surprises after I cut them. speakeraddict
__________________
The ocean isn't bare bottomed...although some of the beaches are. Current Tank Info: 15 gallon custom shallow cube |
01/11/2005, 07:13 PM | #32 | |
Registered Member
Join Date: Nov 2003
Location: Norcal
Posts: 595
|
Quote:
|
|
01/11/2005, 11:41 PM | #33 |
Registered Member
Join Date: Nov 2003
Location: Cranberry Twp, PA
Posts: 1,240
|
are you sure that will work? i think your tank will overflow before the overflow starts its siphon. your overflow needs to set lower than the water level for it to work properly.
__________________
-Aaron Current Tank Info: 75gal display, 30 gallon sump/refugium, 2x 250w Hamilton 14K MH, 4,000 gallon koi pond |
01/12/2005, 05:56 AM | #34 |
Registered Member
Join Date: Aug 2004
Location: Southern WV
Posts: 377
|
pvc overflow
I have made these for some time. They are great when you cannot drill. This design is redundent. You only need one pipe and the cap must be removed or drillied or it will empy when the pump shuts down, just make it bigger. I used these once when I built a central system for a shop and the tanks were already full. It is a great answer when drilling is too risky.
Demovid on Aquaboards
__________________
Youth is fleeting but immaturity can last a lifetime. |
01/12/2005, 06:10 AM | #35 |
Registered Member
Join Date: Sep 2004
Location: Falls Church, VA
Posts: 283
|
Inflames:
Why and how would the water level drop? It's gonna skim the surface as much as the return pumps flow allows it to. The water level will only drop in the sump not in a main display tank. z_rivers: How exactly would that explain other HOB overflows working? This design while probably overly complicated works fine.
__________________
Steve Current Tank Info: It's a work in progress......I mostly need to focus on just one tank |
01/12/2005, 06:23 AM | #36 |
Registered Member
Join Date: Sep 2004
Location: Galloway, OHIO "GO BUCKS"
Posts: 624
|
Looks perfect to me.
tboned, wonderful idea. See ya this weekend. Rockker |
01/12/2005, 08:20 AM | #37 |
Premium Member
Join Date: Sep 2004
Location: Fairview Heights, IL
Posts: 646
|
Add this to the confusion
I have been following this thread for awhile and it would fit nicely on the top of your overflow.
Another overflow |
01/12/2005, 08:45 AM | #38 |
Registered Member
Join Date: Sep 2003
Location: Colorado
Posts: 317
|
What do you think the maximum drain rate is using 1" and 1.25" ? 500-600gph?
I might make one for 300-400'ish gph for my 29gal, size the PVC used down to .75" and 1" |
01/12/2005, 04:38 PM | #39 |
Registered Member
Join Date: Sep 2004
Location: Newark, OH
Posts: 147
|
my design should give you like 1000-1200 GPH
|
01/12/2005, 04:50 PM | #40 |
Registered Member
Join Date: Sep 2004
Location: Newark, OH
Posts: 147
|
Pipe size ...... Gallons Per Hour ........... Gallons Per Minute
½" ........................ 480 ................................... 8 ¾" ........................ 900 .................................. 15 1" ........................ 1,500 ................................ 25 1¼" ..................... 2,700 ................................ 45 1½" ..................... 3,600 ................................ 60 2" ........................ 5,400 ................................ 90 3" ....................... 13,500 .............................. 225 4" ....................... 21,000 .............................. 350 6" ....................... 42,000 .............................. 700 |
01/12/2005, 05:09 PM | #41 | |
Registered Member
Join Date: Sep 2004
Location: Newark, OH
Posts: 147
|
Re: Add this to the confusion
Quote:
I like that Idea |
|
01/12/2005, 05:51 PM | #42 |
Registered Member
Join Date: Jan 2004
Location: San Francisco
Posts: 9,103
|
Becareful with those standard flow rate charts, you sure that's not the maximum flow? I had an overflow box that was hooked to 1" pvc, my pump pushed about 700gph into the tank the single overflow could not keep up.
Out of curiosity though, isn't the total amount of water that will go in restricted by the total area of your skimmer box (or in this case pvc pipe) which in your case is very small, 3.14inches worth of skimming area (times 2). Oh well guess if you dont have much of a return pump should work. It is interesting though.
__________________
Mike |
01/12/2005, 06:05 PM | #43 | |
Registered Member
Join Date: Sep 2004
Location: Newark, OH
Posts: 147
|
Quote:
I also restrict the return with a ball valve just incase and if my center pipe won't handle the water flow you can split the + and run 2 different pipes |
|
01/12/2005, 06:55 PM | #44 |
Registered Member
Join Date: Nov 2003
Location: Norcal
Posts: 595
|
½" ........................ 480 ................................... 8
I dont think so. Maximum flow rate of 1/2" pvc is around 350-400. |
01/12/2005, 07:42 PM | #45 |
Registered Member
Join Date: Aug 2004
Location: Southern WV
Posts: 377
|
Another simple overflow
This is the basic layout. This one is of 3/4" pvc. Notice how long the arm are. these help increase flow using the siphon. You can make them any size. I make one of 1 1/4" for a larger application.
These make great overflows surface extractor when you cannot drill. I used these for a pet store central system where the tanks were established and drilling was too risky DEMOVID
__________________
Youth is fleeting but immaturity can last a lifetime. |
01/12/2005, 07:45 PM | #46 |
Registered Member
Join Date: Aug 2004
Location: Southern WV
Posts: 377
|
Another view of the DEMOVID overflow
__________________
Youth is fleeting but immaturity can last a lifetime. |
01/12/2005, 07:50 PM | #47 |
Registered Member
Join Date: Aug 2004
Location: Southern WV
Posts: 377
|
Here it is on a 10 galllon
Here it is on a 10 gallon tank. The hose insert on the end is 3/4" and a length of Corrigated circuit hose from a home health care seervice. It is the stuff used on ventilators and breathing machines
Notice how it ballances over the glass.
__________________
Youth is fleeting but immaturity can last a lifetime. |
01/12/2005, 07:53 PM | #48 |
Registered Member
Join Date: Aug 2004
Location: Southern WV
Posts: 377
|
More of the overflow
This is the back, when the hose is added it makes it hang better.
DEMOVID
__________________
Youth is fleeting but immaturity can last a lifetime. |
01/12/2005, 08:01 PM | #49 |
Registered Member
Join Date: Aug 2004
Location: Southern WV
Posts: 377
|
Another Idea
This is a useful modification. The overflow tube is actually a little too long in this picture but you can get the idea.
I took a tee and cut off one of the legs. So now it is an open elbowed elle. This allows for the correct functioning of the unit and adds the ability to use a sponge as a prefilter. The open top is in case the sponge gets clogged and water level rises too high. The added tube is drilled for a sponge to fit over it and allow water flow. It is great for fry tanks or Seahorse tanks. Demovid@hotmail.com
__________________
Youth is fleeting but immaturity can last a lifetime. |
01/12/2005, 08:08 PM | #50 |
Registered Member
Join Date: Aug 2004
Location: Southern WV
Posts: 377
|
The one thing that is missing is the anti siphon valve that is inserted in a drilled hole on top. This allows me to suck out the air bubbles that collect there. You can also run an airline from the valve to a power head so that the suction continuously pulls air bubbles out. These are very stable.
These things look great painted black. I break the gloss with pvc primer then spray with vinyl spray found in auto parts stores. Just let it cure for several days. The last one I did took a week before the smell went away. Inverts grow on it with no problem. DEMOVID@HOTMAIL.COM
__________________
Youth is fleeting but immaturity can last a lifetime. |
Thread Tools | |
|
|