DIY Filter Question (koi pond)

[Titaniumpete]

Hi All,

I am attempting to add another filter system to my pond to help with my existing Laguna Pressure Flo UV3200. I have a bunch of spare components from my aquarium days which i'd like to use in my Do-it-yourself design… 65 Gallon Tub with lid (18x18x40), 2x Little Giant Pumps 800gph equipped with 1/2" ball valves, lots of bio balls and lava rock and i've order a no-niche skimmer to retrofit the pond with. I've sketched out a basic configuration below based on a trickle down bio filter. Any comments or, suggestions would be greatly appreciated.

Is it better to submerse the bio material or, trickle over it into a sump area?

 

[addy1]

I would have the water go in at the bottom and out the top, so the junk can settle on the bottom of the tank to be washed out with a filter cleaning. But others have made a down flow filter and like the results. Most of mine over the years have been bottom fed.

 

[koiguy1969]

make sure the top of that filter is above the water line in the pond either way. your pic shows it below.and you cant trickle water thru a filter thats not fully above the ponds water line...if it were me i would plumb from the top with a centered "down pipe" to the swirl bars. (an upflow filter)

 

[fishin4cars]

Please if you would post a introducion in the introdution thread. we ask all new members to please do this, Give us some detail of where you live, how long you've been in the hobby, maybe your name, Then if you would lets get your project into one thread, LOTS easier to work work with you and what you have going on. I just looked at your other post on the filter design. Give us all the detail you can and we will try to help. I do see some issues with your filter plan that we can addressed. What you have can be worked with but the way you have it drawn out could have some better planning and tweaking as we should say. Take your time and explore the site. One suggestion is to check out the DYI section too. Lots of good ideas that you may think are ideas you can add in to your project.

Key things you need to know, When starting a pond, Koi need clean water, Koi get big, Koi need good filtration and koi need room to swim. Deeper is better, a good Koi pond needs a depth of 3-5 foot to be stable in PH, temp, and room to actively swim. a 900 gallon pond may work for 6-8 small koi, for a grown koi you will be lucky to house two. So keep this in mind, working with large fish you need to think large.