Mosquito Fish

If you have a Koi pond with some plant life where small fish can live it is fantastic to add some Mosquito fish to your pond. They grow to about 70mm long maximum. They eat mosquito larva. They are very quiet to watch and add some variety to your pond. The female...

Do Koi Self-regulate According to Pond Size?

If you have a small Koi pond with say 3000 liters with ten small koi, the koi will be fine for a couple of months or maybe years while they are reasonably small. As they grow however, the ammonia content will increase and the koi will get sick and die off and although...

Ball Valve vs. Non-Return Valve

A ball valve and non-return valve are there to shut off water flow or water returning to your Koi pond and bleeding the system, or if the pump is taking a long time to start pumping again. If your pump is installed higher than water level, when you switch of the pump...