No problem. It will be a koi pond with 300 mm membran disc again.
Best regards,
Frank
Search found 61 matches
- 28 Oct 2020, 11:05
- Forum: Pond construction
- Topic: Pond Planning 2022
- Replies: 2
- Views: 251
- 10 Oct 2020, 11:04
- Forum: Pond construction
- Topic: Pond Planning 2022
- Replies: 2
- Views: 251
- 30 Sep 2020, 23:56
- Forum: Parts
- Topic: Good pump and attachment?
- Replies: 4
- Views: 310
Re: Good pump and attachment?
The linked air pumps are inefficient.
Regards,
Frank
Regards,
Frank
- 23 Jul 2020, 22:54
- Forum: Pond construction
- Topic: Water storage Portugal- a few questions
- Replies: 2
- Views: 476
Re: Water storage Portugal- a few questions
Hallo Chris,
2 bar are 20 meter, are you sure?
Frank
2 bar are 20 meter, are you sure?
Frank
- 18 Jul 2020, 23:27
- Forum: General Airlift information
- Topic: Recommended Pump
- Replies: 3
- Views: 4026
Re: Recommended Pump
Check out the FujiMACs in the US, they are high efficient.
Frank
Frank
- 18 Jul 2020, 23:21
- Forum: Technical discussion
- Topic: Airlift pump calculation
- Replies: 15
- Views: 3792
- 30 May 2020, 20:36
- Forum: Technical discussion
- Topic: Airlift pump calculation
- Replies: 15
- Views: 3792
Re: Airlift pump calculation
I use a funnel airlift, 250 mm diameter, 170 cm hight and 5 cm discharge head.
Frank
Frank
- 23 May 2020, 23:34
- Forum: Technical discussion
- Topic: Airlift pump calculation
- Replies: 15
- Views: 3792
Re: Airlift pump calculation
These airlifts are not efficient and expensive.
For example, I pump 60.000 l/h water with 140 l/min air and 76 Watt.
Frank

For example, I pump 60.000 l/h water with 140 l/min air and 76 Watt.
Frank
- 19 May 2020, 14:10
- Forum: Technical discussion
- Topic: Airlift without 90 degree bow
- Replies: 2
- Views: 1936
Re: Airlift without 90 degree bow
Air and water will go in all directions, 360°. Is this really less efficient?
Frank
Frank
- 04 Nov 2019, 23:02
- Forum: Technical discussion
- Topic: Airlift without 90 degree bow
- Replies: 2
- Views: 1936
Airlift without 90 degree bow
Hello all,
who has experience with an airlift without 90 degree bow?
app.php/gallery/image/55014
Regards,
Frank
who has experience with an airlift without 90 degree bow?
app.php/gallery/image/55014
Regards,
Frank
- 23 Jul 2019, 08:44
- Forum: Technical discussion
- Topic: EPDM tube diffusers
- Replies: 25
- Views: 7061
Re: EPDM tube diffusers
The results are partly contradictory.
- 23 Jul 2019, 00:07
- Forum: Technical discussion
- Topic: EPDM tube diffusers
- Replies: 25
- Views: 7061
Re: EPDM tube diffusers
My interference is to do own tests.
Best regards,
Frank

Best regards,
Frank
- 21 Jul 2019, 22:07
- Forum: Technical discussion
- Topic: EPDM tube diffusers
- Replies: 25
- Views: 7061
Re: EPDM tube diffusers
The Gast 1531 seems not to be the best, because the air pump is not efficient. Why that one?
You could use a 160 mm airlift supporting up to 40.000 l/h.
Regards,
Frank
You could use a 160 mm airlift supporting up to 40.000 l/h.
Regards,
Frank
- 20 Jul 2019, 23:02
- Forum: Technical discussion
- Topic: EPDM tube diffusers
- Replies: 25
- Views: 7061
Re: EPDM tube diffusers
Yes, the disc airlift are good for high output. At my pond I move 65.000 liter per hour with a 250 mm (10 inch) diameter airlift and 90 watt. Even more than 100.000 liters per hour would be possible with disc airlifts. But for a 110 mm pipe it's easier to drill the holes into the pipe instead of usi...
- 20 Jul 2019, 19:49
- Forum: Technical discussion
- Topic: EPDM tube diffusers
- Replies: 25
- Views: 7061
Re: EPDM tube diffusers
For a 110 mm airlift I would not use a disc. Drilling holes is the better way here.
Best regards,
Frank
Best regards,
Frank