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Home: KOI Talk: Pond Construction & Water Filtering System:
All this just because I couldn't pass up free fish

 





 


mkgsweims
New User

Nov 18, 2007, 5:52 AM

Post #1 of 4 (989 views)
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All this just because I couldn't pass up free fish Can't Post
Hi everybody! I have a friend that had too many koi fish for his pond and was looking to give some away. Well, me being a sucker for anything free I decided to build a pond in my backyard and start keeping koi. (At this point everyone should be laughing because my "free fish" are costing me thousand of dollars in pond construction.) Anyway, my friend showed me his pond and home-made biofilter set-up and gave me the basic idea for my pond construction.

Here is my question: From the two filter set-up described below, which one is better and why?


Filter set-up #1: A submerged pump is located at the bottom of the pond and is attached to the bottom drain. The pump pulls water from the pond and pushes it through the bottom drain, through 10-feet of horizontal pipe, and up, through 5-feet of vertical pipe, where it empties into the top of the biofilter. Water is forced through the biofilter by gravity. The biofilter has a bottom drain where water exits and travels up four feet of pipe (all by air pressure differences) and spills back into the pond as a waterfall.


Filter set-up # 2: The submerged pump is located in the biofilter. Water is pumped from the pond through the bottom drain, through 10-feet of horizontal pipe, and up 1 foot of vertical pipe where it enters the bottom of the biofilter. The water then spills over into the pond when it reaches a certain level at the top of the biofilter.



I hope this makes sense. I wish I could attach a drawing of the two different filter set-ups, but it just isn't working.

Thanks for your help!


tangigi3
Koi Lover


Nov 18, 2007, 3:33 PM

Post #2 of 4 (974 views)
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Re: [mkgsweims] All this just because I couldn't pass up free fish [In reply to] Can't Post
better to get an out of water pump like sequence. you will save money in the long run. submersible are high in wattage.

a vortex chamber, brush chamber, bio filter chamber ,clean out chamber, pump then uv would be the safest way to go.

do a search and you will find all the drawings you need for your pond.

Lar


thiamhwa
Member / Moderator

Nov 19, 2007, 12:06 AM

Post #3 of 4 (960 views)
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Re: [mkgsweims] All this just because I couldn't pass up free fish [In reply to] Can't Post
Hi mkgsweims,

Filter Set-up No. 1 is the pump-fed system and Filter Set-up No.2 is the Gravity-fed multichamber filters system.
In my opinion, Set-up No.2 is the better option. Reasons being that for Set-up No. 1, all the waste products are
broken further down and taken in by the pump on to the biological chambers which is not the right thing to do
in a filtration process. In a filtration process, ideally all the waste products should be flush out the soonest possible.

In the case of Set-up No.2, this Gravity-fed multichambers filters is probably the most popular and proven filtration
system. With this system, the filtration chambers are constructed at the same physical level as the pond so that
the water level in both is identical. The pumps are usually located in the last chamber to pull the water from
one end of the filter. Irrespective of how many filtration chambers are used, the water will flow from chamber
to chamber, passing through different filter media as it progresses to purify the water. All these filtration chambers
has bottom drains which are built-in for daily back flushing of the waste products. The bigger waste products are
normally flush out in the first chamber which is either the Settlement or Vortex chamber. This will allow only the more
purify and cleaner water to flow on to the biological chambers which will further trap the minute particles. Hence,
only clean water is taken in by the pump which re-direct the water back to the main pond.

I hope this make sense to you as well. Thank you.

Best Regards,
Thiam Hwa


mkgsweims
New User

Nov 19, 2007, 1:38 AM

Post #4 of 4 (954 views)
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Re: [mkgsweims] All this just because I couldn't pass up free fish [In reply to] Can't Post
Thank you for all your advise. I am too far along in my pond construction to make any major changes to the design of the pond and home-made filter system that my friend suggested. The filter space that I have to work with is a made out of cinder blocks and is 4-foot long by 4-foot wide by 3 to 4 foot deep. The filter space is at the exact same level as the pond. There is a bottom drain pipe that runs from the far end of the pond, underneath the pond (big mistake), to the bottom of the filter space I described above.

I am trying to figure out the best way to make a filter out of what I have already constructed. I have done a lot of research as this project has progressed and learned that building a pond is far more then just pouring a foundation, slapping on some cinder block walls, and filtering the water through a barrel full of swamp cooler pads as I was led to believe. However, I know that system will work because that is how my friends pond functions and it is crystal clear. Maybe I am over-thinking this and it is as simple as my friend suggested.

Thanks again for the information and help.

 
 
 



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