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Simply Koi and More Koi • View topic - Block built filter debate

Block built filter debate

Moderators: B.Scott, vippymini, Gazza, Manky Sanke

Postby Gazza » Mon Nov 13, 2006 9:58 pm

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Postby chr1ssy » Mon Nov 13, 2006 11:36 pm

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Postby Shaun » Tue Nov 14, 2006 1:00 am

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Postby Bob Hart » Tue Nov 14, 2006 8:00 am

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Postby greg » Tue Nov 14, 2006 8:47 am

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Postby dho » Tue Nov 14, 2006 11:25 am

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Postby greg » Tue Nov 14, 2006 1:59 pm

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Postby james west » Tue Nov 14, 2006 3:05 pm

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Postby dho » Tue Nov 14, 2006 4:26 pm

This thread is getting more and more interesting.

I have no doubt that settlement chambers work. My problem is the size of them in order for them to work. My other problem is that I do not like the idea of all the fish doings sitting there for weeks on end. When I was running my undersized settlement chamber I was getting a covering of about a couple of cm even though I clean it twice a week. So even if I had a settlement chamber twice the size(that would make it 8ft by 4ft by 5ft deep) and clean it once a week I would still have 2 cm of crap all over the bottom. Maybe if I left it a little bit longer the fish poo will disintegrate but I have never been brave enough to leave it for longer.

James, were you serious about a under bed sand filter. You haven't been talking to George from the YKS have you.
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Postby james west » Tue Nov 14, 2006 5:31 pm

Dho, no not totally serious about underbed sand filter, though they have been the answer to in pond filtration in the 70’s. Out of pond within an enclosed system the debris that builds up on them is actually beneficial to the filtering process, but the down side is the physical surface area needed to process the flow rates we require. Catch 22, high flow rates for biological, low flow rates preferred for mechanical other wise it gets pounded into a soup. Set your flow rate too slow and you get too much settlement in the pond.
But what a bonus if space is no object, then filtered water suitable for drinking and a parasite trap!!!!

What I like about the gravity sand filter option offered by hoffland is all the benefits of a sand filter in a small foot print plus the self flushing process would also act like a foam fractionator. So what to do with the backwash water, too much to return to waste, don’t like the idea of feeding it straight back into a plain settlement chamber, as they suggest, because of the “soup effectâ€Â
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Postby greg » Tue Nov 14, 2006 5:37 pm

Removed.
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Postby Gazza » Tue Nov 14, 2006 6:11 pm

Hi Guys yes this is a great debate and well done to all for taking part i think we are all learning :D

Hi Shaun yes we can see how much settles out in you system how long does it take to be like that and how often do you Hoover :?:

James it sounds like you i like trying many ways of filtration and something that can be great fun and very worthwhile.I understand where you are coming from with the settlement and the K1 theory about water going over or through but at the end of the day the water is still in contact with both but agree perhaps the media that the water is going through could be worse especially if left to long.I have static K1 and this is cleaned regularly but i do know this could be left for longer if i needed but i personal like to get the waste out of my system ASAP which on a small filtration system is a good idea...i think :?

Is you water naturally soft James as thats a nice TDS and shame you don't test ORP as it can be a very useful tool no mater what size pond.

Greg i think food can make a difference in waste but most good systems will deal with it once its settled down but i do agree there are some that defiantly do make toooo much waste :shock:


Even with my small filtration set up my system can handle a fair amount of food and fish and i think a lot of this is down to my maintenance and keeping on top of things as i do believe that the smaller filtration system be it Nexus,BB,Vortex,MB system need to be maintained correctly like anything if you want quality water and healthy fish :D I have taken in four fish this year for a friend who is building a new pond these are all nice size fish which where from 45cm-60cm (which are considerable larger now :wink: )due too this and wanting to test some food rates out i have been feeding rather heavy.

My pond is 4500gls and in total there are 17 fish in there with the smallest being 45cm and the largest at 75cm so a good head of fish and during the sumer i started to run out of food and although i had not scientifically measured this out we was feeding nearly a Kilo a day..........yes i did say a Kilo trust me i couldn't believe it myself as i buy food in 15kg sack and had to borrow some from Bob as the two i had bought run out in a month basically :shock: See both i and my wife feed the fish and she had been taking our son out more in the summer to feed them as he like throwing the food in as well :roll: :shock: :?

Now in all that time i had no spike or any change to the water parameters (which i check on a regular basis) and i also run some monitors 24/7 for ORP/TDS & PH and all stayed spot on and the pond stayed clean without the use of any chemicals,clays etc just clean good water and maintenance.
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Postby Shaun » Tue Nov 14, 2006 8:50 pm

Hi Bob
Yes you are right I have to empty the settlement chamber first to flush the bottom drain pipework, When I started building the filter and putting the pipe work in I was going to have a T piece on the 4â€Â
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Postby Bob Hart » Tue Nov 14, 2006 9:01 pm

Shaun,

Thanks for the update mate.

Greg has described how he flushes his bottom drain pipework without draining the whole settlement chamber and I'd probably have to do similar to Greg.
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Postby Shaun » Tue Nov 14, 2006 9:14 pm

Gazza
The build up in the settlement is one week,and i dont hoover i just sweep it towards the waste with a soft brush works fine if i dont want to empty the whole settlement.
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