Koi Plumbing

Photobucket
The pond water has been green, green, green.  So green we can't see the fish very well.  The fish don't care, and the green water protects their skin from the sun.  But we can't see them.  I added some algae killer to clear it up. 
Photobucket
 I got a new UV unit to replace the old one, so I won't have to use algae killer.  The koi seem to tolerate the chemical just fine, but I dislike using the stuff.  The old UV unit worked fine and dandy when the pond was half the size it is now, but since the remodel it no longer does the job (even with, yes, a brand new bulb).  The new UV unit is supposed to be effective at a much higher flow rate, which is what is needed to solve the problem (I think, I hope).   

The problem is in the red oval below (lower left corner of photo).  I must figure out how to fit the new one in the same general configuration.  The new UV is much longer than the old one.  I have some thinking and planning to do, always a challenge.  The UV is on the bottom drain circuit.  There are two filtration circuits on the pond;  one is the bottom drain circuit and one is the skimmer circuit. 
Photobucket

Dirty water goes down the ponds' bottom drain, into the Sieve which cleans out the larger bits like Koi poops and algae clumps.  The water is then pushed by a pump through a bead filter, which removes smaller particles and also provides a large amount of surface area for beneficial bacteria to colonize.  The bacteria consume ammonia in the water and convert it into nitrates.  Other bacteria convert the nitrites to nitrates.  Ammonia and nitrites are deadly to koi;  nitrates much less so.  But back to the circuit...after the bead filter, the water flows through the UV unit and then splits into two different returns to the pond.  
Photobucket
The skimmer circuit takes water from the top of the pond via the skimmer.  It goes to a pump, which pushes it through another bead filter (more beneficial bacteria colonies), to a shower filter.  The shower sends the water back into the pond.  The shower contains more media for more beneficial bacteria colonies, and the showery flow also aerates the water for happy, happy fish. 
Photobucket
So I'll be struggling with pond plumbing for the next few days.  In the meantime, it's so good to see something of the Koi besides their mouths open for dinner.
Photobucket

Comments

  1. Great post, it's good to read more about your Koi and pond set up as it's still very rare to find koi ponds featured on garden blogs (even ones with koi ponds in it funny enough). Goodluck with plumbing in your new UVC, it's not always easy interrupting an existing pipe system and can be a stressful job. But it's all worth it as you'll be able to see your fish in crystal clear water :)

    ReplyDelete
    Replies
    1. I've noticed that too, wish people would blog about their ponds more--they can't all be zero maintenance, can they? I'm pretty nervous about the plumbing, that's for sure. Measure thrice, cut once...

      Delete
  2. Beautiful fish! Glad you can see them again...

    ReplyDelete
  3. Wow, your fish are beautiful! Your pond is much more complicated than mine are! The water in mine has been greener than usual too. Usually barley straw and peroxide are all I need to keep them clear, but not this year. I might have to check into some chemicals. I don't have koi, just goldfish, but I still don't want them to die.

    Amy

    ReplyDelete
    Replies
    1. Thanks Amy! Koi demand a lot more filtration than goldies because of their size and waste output (prodigious!) Green water won't hurt your goldfish at all.

      Delete
  4. Beautifull fish ! We have koi carps too but our pond is full of plants so we don't see much of them much to my regret.

    ReplyDelete

Post a Comment

Always interested in your thoughts.

Any comments containing a link to a commercial site with the intent to promote that site will be deleted. Thank you for your understanding on this matter.

Popular Posts