Search found 34 matches

by Frank
23 Apr 2017, 11:34
Forum: Your pond
Topic: BjornD's Pond
Replies: 4
Views: 1571

Re: BjornD's Pond

Ok. Why you are going to replace the crielsieve?

Frank
by Frank
22 Apr 2017, 14:13
Forum: General Airlift information
Topic: Muck Vacuum
Replies: 2
Views: 2733

Re: Muck Vacuum

Hello Frank,

the best thing would be a strong pump to blow the muck away. A pressure washer could also help.

Best regards,
Frank
by Frank
24 Mar 2017, 18:53
Forum: Your pond
Topic: BjornD's Pond
Replies: 4
Views: 1571

Re: BjornD's Pond

How many liters do you move per hour?

Frank
by Frank
08 Mar 2017, 21:47
Forum: Technical discussion
Topic: Suggestions for testing
Replies: 12
Views: 767

Re: Suggestions for testing

Hi,

have you had the chance to test?

Regards,
Frank
by Frank
12 Feb 2017, 21:26
Forum: Technical discussion
Topic: Airlift Discharge 50cm below water line?
Replies: 12
Views: 1556

Re: Airlift Discharge 50cm below water line?

The "90 degree bend downwards" will reduce performcance compared to usual airlifts, right?
by Frank
02 Feb 2017, 16:58
Forum: Technical discussion
Topic: Suggestions for testing
Replies: 12
Views: 767

Re: Suggestions for testing

Hi Ron, until now I am a friend of membran airlifts. With less air I get better results. Therefore I compare two cases of membran airlifts at the same enviroment: a) 2 x 160 mm airlift with 45 l/min air or b) 1 x 200 mm airlift with 90 l/min (2 air pumps parallel) Both airlifts with the same length ...
by Frank
02 Feb 2017, 01:23
Forum: Technical discussion
Topic: Suggestions for testing
Replies: 12
Views: 767

Re: Suggestions for testing

20.000 l/h with 12 Watt you could reach without delivery head from my point of view. In a real filter configuration with 5 -10 cm delivery head the yield should be less, isn't it? Since the Secoh SLL 20 is not produced anymore, which air pump should be used for the pressure chamber to reach 20.000 l...
by Frank
01 Feb 2017, 23:29
Forum: Technical discussion
Topic: Suggestions for testing
Replies: 12
Views: 767

Re: Suggestions for testing

Ok, here are some more issues: T-Pipe Is there an output differenz between an airlift with a short pipe outlet (e.g. 10 cm) compared to an long outlet with two T pipes? Single vs. multi airlifts (membran type) Goal is e.g 50.000 l/h. Is it better to use one big diameter airlift (200 mm) or two small...
by Frank
01 Feb 2017, 22:56
Forum: Technical discussion
Topic: Suggestions for testing
Replies: 12
Views: 767

Re: Suggestions for testing

Hi Roy, I have a suspicion that airlifts work best at summer time with high air temperature. This is what I saw serval times. Maybe the reason is the lower densitiy of warm air compared with cool air or the air pumps are a little bit more efficient at higher temperature. Could you check if it's poss...
by Frank
04 Dec 2016, 18:15
Forum: General Airlift information
Topic: Airlift outlet height
Replies: 6
Views: 2237

Re: Airlift outlet height

Ok, thanks Roy. :D

Frank
by Frank
13 Nov 2016, 16:25
Forum: General Airlift information
Topic: Airlift outlet height
Replies: 6
Views: 2237

Re: Airlift outlet height

I changed form the first version to the second. The result at my pond is nearly the same.

Frank
by Frank
10 Nov 2016, 21:48
Forum: General Airlift information
Topic: Airlift outlet height
Replies: 6
Views: 2237

Re: Airlift outlet height

Below the water level is clear. I use version two at the moment.

Regards,
Frank
by Frank
10 Nov 2016, 11:27
Forum: General Airlift information
Topic: Airlift outlet height
Replies: 6
Views: 2237

Re: Airlift outlet height

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