Durso Box

[BeerShark]

Hey there ive built a durso box to overflow back into my sump, when i fill my tank with water to test it, it fill up completely till it forms a siphon then it sucks the box empty over a few minutes then gurgles loudly and repeats. how do i solve this? maybe cutting some grooves like teeth into the outside box to increase water flow? but would that then mean that the water flow back into my sump would be greater than the flow upwards into my display tank? help please!

 

[Matthew5664]

By durso box do you meen a durso stand pipe in a weir?

 

[SkiFletch]

Can you take pics of what you've done?

 

[BeerShark]

The box i put up was like the one i saw on this forum on a journal by aquascaper made from acrylic. i went out and changed the downpipe size to someting ridiculously big and put it on an angle, undid the end cap a little and it stayed constant, blows out alot of bubbles mind you but is still fairly quiet.

incomming dodgy mobile phone cam pics, complete with gargantuan spider that keeps her indoors, indoors and out of the shed! try to hold back the laughter if ive done something stupid! someone gave me a few acrylic offcuts so i thought id give it a go. Sillicone everywhere also heh, ill clean it up if it works.

http/img219.imageshack.us/img219/3160/image004mtnz4.jpg

http/img207.imageshack.us/img207/6683/image000ajnc1.jpg

 

[SkiFletch]

Ah another spider lover, my housemates and I have 2 that we let roam sometimes (rosehair and red-knee tarantulas). Anyways, first off, are those steel/iron pipes I see there? . I'm not so sure of the longevity of that choice due to corrosion, but its tough to comment without knowing the exact materials. Anyways, your problem is very easy to solve. Just drill a TINY hole in the top of the endcapto allow air to flow in there. This prevents the siphon from drawing its maximum flowrate of water all the time as some of it is displaced with air. Since the hole is above the water line and your inner weir wall is below the level of the drain it should always maintain water and an effective siphon. Same principle as breaking the cap seal.

 

[Mr Miagi]

Hey Ben! Good to see you posting! Introduce yourself over at MASAOG. Pitty you dont have a tank yet, cause Adam and Ian are sending down ALOT of frags for us Adelaidians on Friday and in sometime soon!

Ski, im pretty sure they arnt metal. Ive seen some and their made of plastic.

 

[Matthew5664]

I think the fittings are MDPE lock fittings for putting in underground water mains.

 

[BeerShark]

Yea the fittings and pipes are all plastic, so no worries there. ooeerr frags hey? be nice but i reckon im gonna go have a chat with the local fisheries guys and see if i can set up a natice temperate tank and see how it goes, then again the g/f IS pressuring me to go tropical if i ever get it running.. what is it with women and those cutsey clown fish!

Do i really need to drill a hole in the endcap or can i just loosen it slightly? since ive had the much larger size pipe on it and loosened the endcap aswell as having it on an angle it seems to be working ok now. had it running for about 10 hours, will leave it overnight. put a divider in my sump then have a word with fisheries guys monday, hopefully have my fins on the next day! i know theres probably a few people who mightnt be happy with getting my own things but theres alot of great things that are commercially fished in the area suitable for tanks and im willing to bet 1 or 2 of them would be happier in a tank than on a plate!

Oh had to do some of the worst things through work the other week, beam trawls.. they drag a thing that looks like a soccer goal acroos seabeds and catch everything inside it for 50 metres for study.... the amount of seahorses, pipefish and the like just getting stuffed in jars of ethanol alive i wasnt happy.. in the name of science?

 

[SkiFletch]

That doesnt sound fun

Yeah you can just leave the endcap usncrewed too, same effect . Funny those pipes are plastic, they look JUST like the iron pipes we use in the States for natural gas mains. We dont use many lock fittings for our polyethylene either. Interesting