diy overflow system help!!!!!

[shriraj]

i have done my pvc overflow system. But the problem is when i start the siphone it starts but after power is out for more than half an hour or so. The siphone does not start. I have to suck the air from the check value. I will post the pictures can you guys tell me are there any flaws in the design

https://picasaweb.google.com/shriraj...3Dyum1w6qBsAE#

 

[bubbles123]

Welcome to MFK.

The link doesn't work.

 

[dannyboy]

Yeah the pic doesn't work. Sounds like your siphon isn't airtight. Even if the siphon is planned perfectly, if the fittings are a bit loose, or there is a small whole anywhere it will loose its prime...

 

[shriraj]

@bubbles123
thank you

@dannyboy
please check these pics

 

[leather]

I don't see your check valve, sounds like you have an air leak. Its a small leak somewhere. On a side note your tee that leads down to the filter could be lower and would then give you more flow.

 

[Edog610]

need to rig up a venturi system... when power comes back on, the siphon starts automatically

 

[pshtex]

slap some silicon at all the junctions, let it cure and u will be good to go that is if u don't want to use PVC cement other wise cement it up. the silicon would be so u can take it apart later the cement is there for good

 

[shriraj]

hello guys

its working. i have fixed all the leakage. and i have changed the position of Tee i have taken it a bit downwards near the elbow. i m also getting a good flow rate and is matching with the 330 gallon pump. i have not attached any check valve. i have drilled a hole and i have put a hose adapter to it i m going to attach to powerhead.

i want to paint it black how can i pant the pvc with oil paint.

 

[leather]

Best way to paint it is with krylon fusion. It is meant for plastic and safe for fish when dry. Clean and rough up the plastic first.

 

[shriraj]

what is krylon paint.