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  • Brushes in biofilters. Ask yourself why do you use brushes? Do you really need them ... possibly not. They do add to the cost without creating a major benefit in most small biofilters. Brushes in off the shelf conventional biofilters have such big gaps in them the only purpose they can serve is to remove long stands such as twigs, lengths of algae etc. For this purpose they are obviously fine .... is this what you want to achieve? For any other reason they are unsuitable. They don't do any harm ... they just make you poorer. biological pond filters

  • The best biofilter medium by far for conventional box-type biofilters is Alfagrog, a porous ceramic medium specially made for purifying fish ponds. Many people use plastic tubes, hair curlers, plastic coke bottle tops and the like. Be aware that these media need to be used in quite large quantities to be effective at holding sufficient bacteria to ensure clean (biologically speaking) water. You will need 40 times the volume of plastic tubes as Alfagrog to achieve the same biofilter capacity. In the USA Alfagrog is also known as Supra biomedia for pond filters

  • A tip from Patricia in Ireland. She has a large pond with no fish. It had green algae problems. Patricia tried barley straw which took 6 weeks to work. Her tip is that to prevent the mess floating barley straw can make put it into old (or new for that matter) tights. Thanks Patricia. uv light specification

  • When a person builds a pond it is to achieve the vision of crystal clear water. The vision normally includes a pond full of colourful fish and attractive aquatic plants. Often the reality of a pond is something quite different ... a green smelly hole in the ground. This need not be the case. Before you dig the hole do understand that if you intend to keep fish then a biofilter must be installed. A biofilter can be a fairly simple box shaped container with a suitable biomedia inside it onto which bacteria can accumulate so that they can do the job of purifying the pond water day in and day out. all about water garden fountains

  • Filamentous algae and blanket weed. Attached filamentous algae can be seen growing on the rocks of a waterfall or on the sides of the pond. The growth of filamentous algae results from high levels of nutrients, carbon dioxide and the catalyst, the suns energy. Methods of controlling filamentous algae include increased shade, reducing the frequency of fish feedings, practical water changes, and the use of chemicals or plecostomus (algae-eating fish) during the summer months. High pH levels suit algae growth of this kind. This is one reason chalk stream or spring creeks tend to have blanket-weed and are very clear. blanketweed in fish ponds

  • Biofilters need lots and lots of oxygen ... This might sound strange but it is true as I will explain. However before I do I would like to discuss oxygen in terms of good and effective pond keeping. You may know that trout and salmon can only breed in running water such as streams or rivers. You will also know that these particular fish make hazardous journeys up to the very top parts of river systems. The essential reason for these long perilous journeys to these headwaters are that the water is: cool, pristine, clear, fast running, shallow, full of gravel ... ie the oxygen levels are high and suitable for breeding. koi pond filters

  • Plants and algae in a pond compete for the available nutrients in the form of phosphorous and nitrogen containing chemicals. It follows that the more pond plants there are then the greater the probability of reducing algae blooms (green or brown murky water). Old well-planted and chemically stable ponds as a result tend to suffer less from algae problems than newly created young ponds. Yes algae are plants and blanket weed is algae. Ponds with lots of blanket weed tend to have crystal clear water. Blanket weed thrives best in alkaline (higher pH) ponds. pond algae and uv

  • Winter water gardening ... If the frosts are slow to arrive, the foliage factor from some of the variegated water plants is a major bonus. The sword like leaves of the Iris laevigata Variegata, the variegated scented rush Acorus calamus Variegatus or the small tufty A. gramineus Vareigatus are late to die down and are up early spring, brightening up the most moribund boggy patch. Gardeners garters (Phalaris arundinacea var. picta) add a splash of colour all year, but are somewhat rampant and difficult to contain after the first year floating pond plants

  • The pond filter as winter approaches ... if you have not looked already the filter is in need of a major service. The Ultra Violet clarifier needs cleaning too if you have one. The filter needs back flushing if you have that facility, otherwise scoop out the medium and rinse it in pond water or rainwater to flush out the worst of the muck. It does not need to be spotlessly clean, but check the chamber in the base because if the system has been overloaded at some time in the summer the evidence will be there to see. Scoop out this mess and rinse with pond or rainwater water. water gardens and pond filters

  • A waterfall adds oxygen to a pond by creating a large surface area across which air can be absorbed into the circulating water. A simple fountain also adds large amounts of oxygen to pond water. A fountain is cheaper than a waterfall. It makes good sense even in the smallest pond to have a small fountain running night and day if at all possible. When fish deaths occur in a pond they often occur in the early hours of the morning ... at this time oxygen levels tend to be at their lowest. all about ponds and waterfalls

 

Never switch off your pond pump for more than about 60 minutes

Make sure the delivery pipe from the pond pump is not kinked

Must the UV be placed before the biofilter?

A waterfall adds oxygen to a pond by creating a large surface area

Submersible pond pumps can operate against a closed valve

It is a good idea to pump out about 10% of your pond water

Lighting in and around ponds creates a brand new dimension

Sick and tired of looking at debris on the bottom of your pond?

Do not feed more food than what you fish can eat

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