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Retirement and forum shutdown (17 Jan 2022)

Hi,

John Howell who has managed the forum for years is getting on and wishes to retire from the role of managing it.
Over the years, he has managed the forum through good days and bad days and he has always been fair.
He has managed to bring his passion for fish keeping to the forum and keep it going for so long.

I wish to thank John for his hard work in keeping the forum going.

With John wishing to "retire" from the role of managing the forum and the forum receiving very little traffic, I think we must agree that forum has come to a natural conclusion and it's time to put it to rest.

I am proposing that the forum be made read-only from March 2022 onwards and that no new users or content be created. The website is still registered for several more years, so the content will still be accessible but no new topics or replies will be allowed.

If there is interest from the ITFS or other fish keeping clubs, we may redirect traffic to them or to a Facebook group but will not actively manage it.

I'd like to thank everyone over the years who helped with forum, posted a reply, started a new topic, ask a question and helped a newbie in fish keeping. And thank you to the sponsors who helped us along the away. Hopefully it made the hobby stronger.

I'd especially like to thank John Howell and Valerie Rousseau for all of their contributions, without them the forum would have never been has successful.

Thank you
Darragh Sherwin

venturi effect depth

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28 Jul 2014 21:44 #1 by LemonJelly (Johnny Cowley)
I'm wondering, how deep can a filter or pump be before the venture effect doesn't have an, uh, effect? :crazy:

Is it dependant only on the depth? Or also on the rate of flow of the filter/pump?

"The only thing that burns in Hell is the part of you that won't let go of your life; your memories, your attachments. They burn them all away. But they're not punishing you.They're freeing your soul."

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28 Jul 2014 22:11 - 31 Jul 2014 23:23 #2 by platty252 (Darren Dalton)
Yes it depends on both the depth and the flow rate of the filter or pump.

The more flow from a pump the more it can pull air through the venturi.

On a side note I came across an air pump recently that would fit in the palm of your hand like a coin.
It was able to pump a lot of air at 1 meter deep. Available later this year.
Last edit: 31 Jul 2014 23:23 by platty252 (Darren Dalton).

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29 Jul 2014 08:35 #3 by LemonJelly (Johnny Cowley)
The pump is part of a hillstream manifold I'm making. It'll be pumping 2000lph 15 inches below the surface. That should be fine shouldn't it?

Does that new pump use a diaphragm?

"The only thing that burns in Hell is the part of you that won't let go of your life; your memories, your attachments. They burn them all away. But they're not punishing you.They're freeing your soul."

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31 Jul 2014 23:29 #4 by platty252 (Darren Dalton)
I would say you will be fine at 15". I suppose you will know when you set it up.
If it doesn't produce enough air you could always add a small air pump on to the venturi.

I don't think the new style air pump has room for a diaphragm. Way to thin.

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