Overflow

[cweber]

Ok i added an overflow to my nano. I still cant trust the water draining on a restart. It wont drain fast enough. Also when i turn my 90 in the overflow upward it flows but i have the toilet sound.Do i need to have an air hole somwhere? The bulkhead that i have, has the 90 on the back (that goes to the sump) built onto the bulkhead itself so i cant just run a pipe upward. (if that makes sense) I will post a pic in a little while, but if anyone has advice please lmk. Thanks

[jojo22]

try a google on Durso standpipe or this link if it will fit. Hofer Gurgle Buster Construction (http://home.everestkc.net/jrobertson57268/HGB/HGB_construction.html)

[hummer]

i took a 1/4 inch tube and suck it half way down the pipe through the 90 and made sure the other end is not in the water it worked for me

[cweber]

Jojo i looked at the stand pipe and i dont think one will fit.

Hummer, you think i should drill the top of my bulkhead and run a small piece of tubing down it?

I fed a piece of airline through the bulk head(from the inside of the tank) will an adjustment screw on the end. It helps but in a power surge i dont know if i would trust it. I let it run all night, not much gurgling anymore. But if i shut it off, somtimes it started okay and somtimes it went almost to the point of overflowing the d/t. Although when the display is really full the section where my pump is, is almost empty. So maybe i dont have much to worry about?

[jojo22]

Take a look a spooky's diy threas he mad his own outside of the tank maybe it would work for you.

[hummer]

i did not drill any holes i just fished it through it will try to post a pic soon for you :)

[cweber]

Ah crap! I drill a hole in mine last night. I had it fished throgh the opening, but after i drilled it it seemed to help more. It still gurgles a bit, but it starts much better.

[jojo22]

Do you have a weir or an overflow box??? If it is as box try adjusting the part inside your tank, if you play with it enough you will find a sweet spot that wil be MUCH quieter.

[cweber]

I just built a glass box around my bulkhead that has an elbow that i can move.
http://i91.photobucket.com/albums/k304/cweber_2006/HPIM0437.jpg

[jojo22]

Thats right!! DUH!!! Try fitting a stand pipe on the outside of the tank??

[cweber]

My bulk head has a 90 elbow with a slip fitting for vinyl hose on the out side. I bought it thinking save a few dollars and thats my only option. Last night i fed some tubing for it to breathe a bit and that helped a lot. Still gurgles about every 5 minutes or so.

Let me take some more pics tonight and you can see what im talking about.

[jojo22]

You may have too much flow for your pipe and it is cloging with water then burping the air up after pressure builds. If you have your return T'd off try reduceing the flow to your tank see if that helps!!

[cweber]

http://i91.photobucket.com/albums/k304/cweber_2006/HPIM0440.jpg
http://i91.photobucket.com/albums/k304/cweber_2006/HPIM0439.jpg
http://i91.photobucket.com/albums/k304/cweber_2006/HPIM0438.jpg
Do you think 300 gph is to much for a 1" bulk? Also what you described is exactly whats happening.

[jojo22]

Try turning the 90 up more so that part of it is above water, the air might have an easier escape route if there is a clear path.

[cweber]

Will do. What do you think about the nozzles? Is that what you had in mind?

[stevebla]

If you can remove the 90 in the box it might breath better. I don't think 1/4" airline is enough to make a difference.

[jojo22]

Yep but since the dog ate them, if you melt tem and crimp a little then heat them again, you can do it with no burning, if you take your time, just do one a little then the next, by the time you get back to the first it will have cooled a little.


BTW stevebla has a good point if turning it doesn't work try taking it off.

[cweber]

Take the 90 off...huh...lol...thats where a little enginering went wrong. I cant take it off. I could if i tried but it wouldnt be reusable. Last night i cut some of my drain hose off. About 10 inches actually. The bubbles werent able to escape and were rising up the drain. Cutting it off help a lot. And i retuned the tubing. No more gurgle and it starts draining as soon as the water rises. I also turned the 90 upward a bit to. It ran all night and not much sound.

Oh and i replaced the nozzles the dog ate. They are melted almost completly flat. It wouldnt spray harder until that point.

[jojo22]

Cool glad all is working out for you!!

[carpenterwrasse]

trial and error thats what make life interesting.....

[spookey]

ty for that jo....and nice work there cweber

[jojo22]

Credit where credit is due my man!!!

[cweber]

Thanks Guys!

Hey jojo, how much water evaps from your nano? Im adding 3/4 gallon daily.

[stevebla]

I have a similar setup in 1.5" plumbing i thought the max flow through this pipe would be around 1500 gph a number i got from a calculator on a different site. 1 " plumbing should max around 600 gph. When i was playing around and put a 90 elbow on the out side the water level would rise and fall in the overflow box suck air and sound not unlike a toilet flushing. So I put a t fitting on the outside of bulkhead and the vent solved that problem. However when I put a second return pump for around 700 or 800 gph the system would barely keep up! Puzzles me as i run 400 gph through a 1" u tube siphon overflow on a different system. I wonder if low pressure is a factor in the flow of these surface skimming boxes???????????????????

[cweber]

Im sure that does have somthing to do with it as the siphon is sucking water and the other is just draining.