[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Diy above tank cannister trickle filter.
- To: "aquatic-plants at actwin_com" <aquatic-plants at actwin_com>
- Subject: Re: Diy above tank cannister trickle filter.
- From: Andrew McLeod <thefish at theabyssalplain_freeserve.co.uk>
- Date: Mon, 26 May 2003 22:52:59 +0100
- User-agent: Opera7.11/Win32 M2 build 2880
From what I have read, the intense aeration provided by a trickle filter
helps keep the water aerated, but it is not absolutely required. In an
airtight trickle filter, the oxygen for nitrification must come from the
water. In a planted tank, or a very well aerated tank, then O2 levels
dissolved in the water are high enough that it should not make a
significant impact, and a sealed trickle filter should work almost, or as
well as, an aerated trickle filter. In fact, when CO2 is being added, O2
saturation can increase from 80-90% to 110-120%, so the greatly decreased
CO2 loss causes dissolved O2 levels to increase, providing more than enough
oxygen for nitrification.
Damian Barton wrote:
> I just wanted to let you know about my 'new' filtration
> setup that replaced my conventional diy trickle filter
> - -overflow, bio-tower and sump-setup.> ...
> The barrel is completely airtight so there is
> no Co2 loss or water evaporation ...
If the system is air-tight prior to the output, then where will
your bacteria get the oxygen necessary for nitrification? I
have a large air pump injecting air into my media tower. Just
wondering if I missed something, here ...
Most filters only rely on dissolved oxygen anyway. Underwater filters work
thefish at theabyssalplain_freeserve.co.uk