Backyard Aquaponics
A place to discuss aquaponics

Can i make this with the following.

1. 25mm bulkhead
2. 25-40mm adapter
3. 50mm pressure pipe
4. 80mm pressure pipe (anyone know where i can get 1m lengths of this or 100mm pressure pipe?)

Will it work well or do i need to go for the bigger inner tube?

You could, but using a 25/40mm reducer on top of your siphon tube leaves very little clearnce in a 50mm bell pipe, which may constrict the flow and stop your siphon from working properly. I would use at least a 65 or 75mm diameter Bell tube for the required clearance to be safe, and then use at least a 100mm diameter media guard pipe.
You don't really need pressure pipe for this application, stormwater pipe is just as effective and much cheaper and easier to get.
Cheers IanK

Or you can use a plastic soft drink bottle for he bell.

Thanks Decal, i saw that video previously. Problem is what to hold back the media. I dont really want to use storm water pipe as i have pressure pipe for everything else. Been thinking about Affnan's brick idea but that would reduce the GB room a bit.

You can use just about any thing to hold the media back with, plastic buckets with the bottom cut out is a good cheap option. Just need to think out side the box a little and look at things a little different.

Good luck and look forward to seeing what you have come up with.

In the video I have used a large bottle, I now mostly use the taller and thinner water bottles which fit better in the PVC pipes.

Keep It Simple Stupid!!!!

carna pies!!!!