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Friday, September 23, 2005

Koi Pond Dynamics Ammonia level after feeding toxicity oxygen percentage metabolic dependant constant ammonium

Koi Pond Dynamics Ammonia level after feeding toxicity oxygen percentage metabolic dependant constant ammonium: "The levels of ammonia and toxicity of ammonia are never constant. A few hours after feeding the ammonia level will rise as the nitrogen wastes of the fish are excreted. This can actually be measured. A measurement just before feeding should produce the lowest or no ammonia reading (if everything is working). However, an hour or two after feeding a high ammonia level will be recorded as the fish are now excreting their metabolic waste products. Interestingly a corresponding drop in oxygen levels at this time have also been measured in ponds as Koi consume more oxygen in the metabolism of the food.

The higher the temperature the faster the metabolic rate and the quicker ammonia will be released into the surrounding water. However, there is another dynamic related to ammonia - the toxicity of ammonia (NH3) is not constant during the course of a single day. Ammonia is found in two forms in the pond. The toxicity of ammonia is pH dependant. Ammonia changes from ammonia to ammonium (NH4 ) as pH drops i.e. it becomes less toxic. As pH rises (naturally during the day) the ammonium (or a percentage of ammonia) converts back to toxic ammonia.

Whilst very high pH above 9 makes a higher percentage of ammonia more toxic and has certain negative effects on Koi, low pH had other effects on the pond system. For example, the bacteria in the filter are oxygen and pH dependant."

Friday, June 17, 2005

koi varieties japanese koi fish explained quality japan breeders

koi varieties japanese koi fish explained quality japan breeders: "It cannot be denied that 'Japanese style' shows are preferable for viewing the koi, judging them and teaching/learning more about appreciation. Unfortunately there are very real dangers to the koi, especially in the light of recent disease outbreaks like Koi Herpes Virus (KHV), which is easily transmitted and can be rapidly fatal. It would seem from the literature that even thoroughly quarantined koi that appear healthy, can still harbour this virus."

Tuesday, June 14, 2005

koi varieties japanese koi fish explained quality japan breeders

koi varieties japanese koi fish explained quality japan breeders: "Kohaku



Kohaku are arguably one of the favourite if not the most popular Koi kept in the hobby today. The very reason for this is not hard to fathom - a good quality Kohaku with crisp clean red (hi) patterns on a snow white body background makes for a stunning sight, and unusual for any fish."

koi varieties japanese koi fish explained quality japan breeders

koi varieties japanese koi fish explained quality japan breeders: "This site has as it's primary aim to bring you information about Koi varieties. This is a site that explains how and why Koi are valued both in monetary terms and in appreciation aspects. It serves as a beginning for novices and as a service for experienced Koi keepers"

Tuesday, June 07, 2005

Over-wintering pond fish

Over-wintering pond fish: "As the water cools, pond fish require less protein in their diet. When koi and goldfish are fed high-protein food in cool water, the excess protein is excreted as ammonia from the gills. The microscopic organisms that make up the biological filter (and consume ammonia) also slow down in cooler water.
Improper seasonal feeding can lead to a build-up of toxic ammonia, which stresses fish and reduces their winter survivability. When the water temperature drops to approximately 65� F, start feeding with Spring & Autumn Pond Food. This type of fish food is better suited for the dietary requirements of pond fish in cool water and won’t pollute the water with excess ammonia. Some water gardeners continue to feed their fish until they no longer come to the surface. I stop feeding my pond fish when the water falls below 42� F. "

air oxygen aeration koi fish ponds air pumps air lines

air oxygen aeration koi fish ponds air pumps air lines: "Seriously, it will come as no surprise to regular readers to hear that if there is just one message above all others that we would like to be remembered for, it’s highlighting the role of dissolved oxygen in successful Koi keeping. There can be little debate that of all elements available to us, oxygen is not just the most effective but also the easiest to deploy and increase, and, it also has just about the shortest downside list on the planet!

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Thursday, June 02, 2005

settlement chambers settelment

settlement chambers settelment


Pond water will flow from the bottom drains of the pond up the pipes in the direction of the red arrow as shown.
An ideal settlement chamber will be sloped from shallow to deep. The bottom drains will all face upwards and be located in the deep end of the settlement chamber, whilst at the opposite side on the shallow end of the chamber the exit pipe that feeds the primary mechanical filter stage will be located.


Being located higher than the bottom drain pipes increases the likelihood of the solids entering into the settlement chamber being collected in the deep end.


And YES, this does mean you need a waste flush valve located somewhere near the deep end of the settlement chamber so that you can flush all these nasty solids straight out and off to waste.



settlement chambers for koi ponds

Settlement chambers are useful, albeit somewhat ugly things. Thankfully they can be easily hidden however.

Settlement chambers - essential ...


What is a settlement chamber?

Click on the picture above for an enlargement...

We have seen that bottom drains are essential in a Koi pond. We have also seen that 110 mm piping is the way to go on bottom drains and that we don't want pumps in the water path before mechanical filtration takes place.
A settlement chamber is a smallish concrete chamber that has the 110 mm bottom drain pipes entering the bottom of the chamber vertically.

http://www.happykoi.co.za/how_to_build_a_koi_pond_part_4_settlement_chambers.htm

Wednesday, February 09, 2005

Record-Journal

Record-Journal: "Rat terrier owners from across the state get together throughout the year to share stories about their beloved little pups and let those pups get into a little mischief.
'You get a lot of good belly laughs watching the dogs do silly things,' said Claire Wong-Ostapowicz, the founder of the group. 'We have three Koi ponds and one of the dogs always goes in. The shock on the owner's face is hysterical. They just want to crawl under a rock.'
Wong-Ostapowicz, a 44-year-old Wallingford resident, started the group seven years ago with about five other people. She said the group is up to 30 people.
Rat terriers are descendents of Manchester terrier, Italian greyhound, beagle, fox terrier and toy fox terrier, Wong-Ostapowicz said."
Building Koi ponds for dogs?:

Wednesday, February 02, 2005

Announcing Latest Version of "Garden Bridges" Written By: Rod Bird :: MediaSyndicate :: Free Press Release, PR, IR, News Post & Media Relations

Announcing Latest Version of "Garden Bridges" Written By: Rod Bird :: MediaSyndicate :: Free Press Release, PR, IR, News Post & Media Relations: "Wooden bridges have been used for many centuries for things such as draw bridges, for spanning crevices, over creeks, ponds, gulleys and in fact anywhere to cross over low areas such as valleys, dips and depressions as well as water of course, even by Joe (home owner) in his backyard. "

http://www.happykoi.co.za: