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Posted by JR
on 10/30/2009, 11:56 am, in reply to "Re: Back to bead filters"
205.188.117.70
Harry, I'm sure Steve will have an answer for you but you don't need to be shy, Just ask me WHY I said the things I said and I'll tell you ( I don't bite !)
If you take the emotion out of it and the desire or fear of being 'right or wrong' in a debate, you are left with the facts. And I'd like us to focus on the facts.
In my case, I have been around BBs since the first were offered to the public, many years ago now. Not to mention the 8 ehiems have run on my marine tanks for 25 years!).
And I have reinstalled, redesigned and replaced many of fellow pond keepers units over the last 15 plus years due to issues with them.
On of the more high profile debates took place at a koi wholesale/retail facility In my area, in which the installer put in a dozen at-the-time state of the art BBs. It was a text book illustration of what can go wrong with BBs when installed as stand alones.
But on a BIG PICTURE level one does not need to get into brands as the concept and short comings of BBs are universal in ALL closed biofilters. These issues revolve around;
1) organic build up in a unit that is both mechanical and biological. A kind of conflict of interests.
2) gas issues associated with a closed container and accruing organic waste. Nirogenous gases and decline in oxygen at the biofilm level.
3) the absolutely universal reality of mineralization, nitrification and eventually ( heaven forbid) denitrification. Intensified in organically rich environments with limited gas exchange.
So Harry, One does not need to know the brand name or decal on the container, the shape of the beads or the bouyance of the beads- the issues are all the same, regardless.
If you step back and look at this forest beyond the trees, you will appreciate that the marketing issues promoted around all of these units are reactionary ( and very telling) to the facts of life in a closed container- ease of flushing, bouyance of beads to resist packing and biological gluing, pressure gauges to telegraph mounting clogging and organic loading. Unfortunately, as valuable as some of these 'improvements are' they are not solutions to the fundamental realities.
I'm sure your koi do fine! There is nitrification going on after all! But do accept that nitrate building closed units of all kinds are less helpful to 'ultimate water' in a closed system than open systems and long term design filters are. That's all I'm saying. If that is too offensive to your experience, I apologize. But I have a need to share the facts. In short, it's OK to hate the messenger but not the message--
JR
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