Pond Maintenance

You can have your pond cleaned out at any time of the year, really the only difference is we get cold and wet in the winter compared to the summer! The one thing to be mindful of is if your pond is home to wildlife. Frogs and Toads will spawn between January and March and Newts will spawn between March and June. So, with this if you have a population of these it may be worth getting your pond cleaned out before these months or a couple of months later to avoid disrupting them. Although being said it is easy to move spawn into holding tubs during cleaning so if you want the pond cleaned during these times it can still be done.

Our routine maintenance typically includes:

• Water quality check
• Filter cleaning
• Removing sludge and debris
• Plant trimming and health check
• Pump inspection & cleaning
• Top-up and treatment (if required)

Yes — we specialise in fish-safe cleaning methods. Our process keeps stress to a minimum and maintains healthy water conditions.

Absolutely. We handle full pond deep cleans, restorations and revivals, bringing even the greenest or most overgrown ponds back to life.

Most standard cleans take between 1–3 hours, depending on size and condition. Larger or very dirty ponds may take longer.

Not always. As long as we have access to the pond, we can carry out the work and send you before/after photos.

No. We use eco-friendly methods, protect plants where possible, and ensure safe handling of wildlife such as frogs and newts.

Green water is usually caused by algae. 

The clarity of your pond water can be affected by several factors. Firstly, if the water is green then immediately the first thought should be is my UVC clarifier working? Perhaps the lamp needs changing which is recommended to be done annually, or another consideration is if your UVC clarifier is big enough for your pond and if so an upgrade or additional UVC clarifier may be the answer. If you do not have a UVC clarifier then getting one installed is the best solution to this problem. There are also several “green water” treatments available on the market in shops however long term a UVC clarifier is truly the best solution. Another thought is whether the water parameters are at healthy levels. If left unchecked nitrates and phosphates in the water will steadily increase which in themselves directly feed the like of algae so a simple series of water changes to bring these back down to acceptable levels can help bring the water clarity back.

Now if your pond is murky with silt suspended in the water column then the initial first thought would be the base of the pond has buildup of silt, sludge and debris so therefore does the pond need vacuuming or even does it need a full clean out. The other thing to consider is your filtration system. Does it need some attention in the form of cleaning out, changing the sponges etc. Or is it not large enough for the pond, perhaps the baby Koi you purchased last summer have now grown so much that the volume of waste they produce now compared to their smaller, younger selves are simply too much of a strain on the original filter system. Once again there are “sludge buster” and “silt remover” chemicals readily available on the market in shops but this would really be a plaster on a bullet wound and instead dealing with the route problem will bring the best and longer lasting results.

Yes. We supply and install new pumps, filters, UV clarifiers, and pipework, and can advise on the best system for your pond.

Lilypad Exterior Cleaning covers all major parts of Kent, Including:

West Kent

• Maidstone
• Tonbridge & Tonbridge Wells
• Sevenoaks
• Paddock Wood
• Coxheath
• Staplehurst
• Headcorn

East Kent

• Canterbury
• Herne Bay
• Whitstable
• Margate
• Ramsgate
• Broadstairs
• Faversham

North Kent

• Medway Towns – Rochester, Chatham, Gillingham
• Sittingbourne
• Sheerness / Isle of Sheppey
• Gravesend
• Dartford

The answer depends on the details of the pond. If you have a wildlife pond with no Fish, then the answer is no you do not NEED a filter system for the welfare of the Fish however it is something to consider for the point of view for water clarity as the water has a high chance of going green during the summer months.

If you do have Fish in the pond, whether that’s Goldfish, Koi, Sturgeon or any other Fish then yes you NEED a filter system. The reason for this is simple, without a working filter the organics in the pond; the Fish waste, left over food, sludge and silt, will break down into ammonia. This is a toxic parameter to Fish and builds in concentration the longer the organics break down. A filter acts as a breeding ground for beneficial bacteria to grow which breaks down this ammonia into less harmful chemicals which are later diluted through rainfall, top ups and water changes. Without an adequate filtration system your pond water will become murky and green, the water parameters will become increasingly toxic and ultimately will end in loss of Fish.

Yes, you can use tap water in your pond, however the important thing to remember is to dose the new added water with an appropriate volume of water dechlorinator. This chemical is readily available from pond shops often labelled as “tap water treatment”, this chemical will detoxify chlorine, chloramine and heavy metals which all are harmful to aquatic life after long exposure. A question often asked is can I use rainwater? The problem with rainwater is it is too soft; it lacks any substantial volume of minerals which are essential for bodily functions in Fish. Long term use of rainwater often leads to a crash in parameters of the pond leading to mass fish loss. Whereas tap water, especially in the southeast of England, the water is very high with a high volume of minerals perfect for long term sustainability in fish health.

This is a very debated subject amongst the hobby and trade as people have their own opinions however a good rule of thumb is as follows; Goldfish growing to a potential adult size of 30cm they require an absolute minimum of 300 litres. This is again a bare minimum where a few Goldfish can live a long-term life of good health with a suitable volume of water to live in. Taking into consideration they will readily breed once they reach sexual maturity it is certainly worth allowing extra space for this so having a pond larger than 300 litres will give the Goldfish room to grow in numbers as they breed.

As for Koi these require a far larger pond, their potential adult size of 120cm makes them a potentially enormous Fish. A Koi typically attains an adult size of 60cm in a pond with some specimens reaching the 100cm+ size. Their adult size does depend on several factors: genetics, pond size, feeding both quality of food and frequency of feeding and finally water quality and parameters. An absolute bare minimum 4000-5000 litres and ideally aiming for a pond with a depth of a metre deep. The deeper portion of the pond will hold temperatures better if dug into the ground also with this koi really appreciate the third dimension of being able to swim up and down instead of just side to side. In shallow Koi ponds it’s not uncommon to see individuals with “fat necks”, often where they cannot burn off excess fat from swimming up and down.

Blanketweed often feels like a never-ending battle for pond keepers. It is unsightly and if left to go out of control can be harmful to pond inhabitants with Frogs becoming tangled when going up for breath or Sturgeons getting caught up often leading to death. Unfortunately, blanketweed seems to come and go as it pleases and can be a long-term fight to get rid of. However, going back to basics, blanketweed is simply a plant and a plant needs two things to grow; nutrients which is good supply in a pond from Fish waste and other organic matter and secondly light which the Sun gives a lot of. In a perfect ideal world if you can reduce the number of hours your pond receives sunlight; in the form of a pergola, cover etc. would massively help against the growth of blanketweed. But for more practical solutions testing the water for parameters such as nitrates and phosphates will give you a good idea of where to go with the problem. If these levels are too high, it’s essentially an open tap of nutrients feeding the blanketweed. So, a suggestion would be to firstly carry out a series of water changes to reduce the levels, secondly you can look at the market of pond products that help in reducing these parameters such as phosphate/nitrate removing blocks, chemicals and granules. You can also purchase a blanketweed control treatment from a pond shop that comes in the form of a white powder which you mix with some pond water and dose across the pond, often requiring numerous ongoing doses but usually see good results.

Another option but should only be considered for the larger ponds would be Grass Carp. This is a species of Carp that attains a large maximum adult size of 120cm so before jumping to this option consider whether you have a pond large enough for this Fish and if you want to house one long term as it’s a long-lived specie. If your pond would make a good home for a Grass Carp then these are a fantastic option to control your blanketweed as they have a known taste for it, be warned though blanketweed would not be the only thing on the menu for these gentle giants, anything green and leafy will be lunch including your beautiful pond Lily!

There is no simple answer to his question as it does depend on what Fish you have, how big are they, how many Fish you have and what time of year it is. Fish are cold-blooded, so their metabolism is affected by the temperature of the water. The warmer the water the faster their metabolism is and the more they want to eat, the colder the water the less they will want to eat and in the coldest times of the year when water is low single digits or lower Fish will often cease eating altogether. But a simple rule to follow is to pop a small amount of food in, watch them feed, if they eat all the food then put some more in. Repeat this until they no longer show interest, any food left uneaten after a few minutes should be netted out otherwise it will decay in the pond and in large quantities can cause ammonia spikes.

A healthy, happy Fish should be seen swimming calmly through the water upright with all their fins spread out. A common problem pond keepers meet is their Fish at the surface “gasping” for air. This is a sign of the Fish struggling with breathing. Unlike other Animals, Fish do not possess lungs instead they rely on gills for respiration/breathing. Usually, the simple act of them breathing is not very noticeable however when they are struggling them will expand their gill plates in and out and open and close their mouth almost reflecting that of “gasping”. The cause for this can be several things, firstly a lack of oxygen in the water column. If the water surface is not agitated enough the vital gas exchange of CO2 exiting the pond and oxygen entering can be affected causing a low level of oxygen. A simple fix to this is to cause surface agitation in the form of an air pump, fountain, waterfall etc. Another cause of the “gasping” can be nitrite poisoning; this is easily tested for with a simple pond water test kit. If nitrite is present this will heavily affect the Fish’s ability to absorb oxygen through their gills. A quick fix would be to carry out a series of partial water changes to bring the nitrite levels down, also adding beneficial bacteria products to your filter can aid in breaking down the nitrites. Ultimately investigating why nitrite is present in the first place is vital to avoid a recurrence.

Another cause of “gasping” can be a symptom of underlying parasite such as Gill Flukes which in severe cases can be such a strong infestation that it physically affects the gill’s ability to absorb oxygen.

This is a very common question asked by pond keepers in the UK where temperatures can reach subzero and consistently stay at low single digits for long periods of time. Firstly, with Fish being cold blooded animals their metabolism is affected by temperature so the colder it is the less they will want to feed, with exception to Sturgeon and Sterlets who will continue to feed throughout the winter periods. During the colder periods a reduction in feeding is expected often feeding only once a week and even a complete halt of feeding in the coldest temperatures.

The next thing to think about is filtration systems, although these are vital for the rest of the year to keep the water parameters in check during the colder periods of the year where water can freeze it is worth turning all pumps off. The reason for this is even running water will freeze at 0c so the last thing you want is water to freeze in your pipes and hoses which then results in excessive pressure pushing outwards causing the pipes and hoses to split ultimately leading to leaks when the water is once again running.

The last thing to consider is the oxygen levels for the Fish. If the temperature drops to 0c the water in your pond can freeze, in the deeper parts of the pond especially if dug into the ground the water is unlikely to freeze. However the surface layer will very likely freeze and if it does the vital gas exchange of oxygen entering the pond and Co2 exiting will be affected. An old school fix to this is to leave a couple of tennis balls floating in the pond so when the water does freeze you can pop the balls out leaving behind air holes. You can also break the ice but be careful as large heavy chunks of ice falling in the pond can damage the liner/walls of the pond and not to mention may hit the Fish. These days you can also purchase pond ice vents and pond heaters, these aim to produce a small area of heat that will keep the water in its immediate vicinity to not freeze.

Not only do pond keepers have to keep their Fish alive through care water quality monitoring, a healthy diet, adequate filtration etc. they must also be mindful of native predators, most commonly Herons and Seagulls. Herons are known for completely clearing ponds of Fish, even Koi are susceptible to predation. There are several deterrent-based products available on the market; shiny balls with eyes painted on them, Heron statues, laser and alarm systems and many more. Unfortunately, Herons are smart animals and come to learn that these products are not a threat to them and will often overlook them. Ultimately the best solution is a physical barrier whether than is a wire fence around the perimeter of the pond, netting across the pond or even electric fencing around the pond. A physical barrier will create a fool proof way of stopping the Herons from wading into the pond to collect their lunch.

Seagulls on the other hand although not known for clearing ponds will give it good go trying to peck at the Fish very rarely resulting in a takeaway meal for them but leaving your Fish with open wounds often leading to infection such as ulceration if left unsupervised or treated. The same goes for Seagulls as it does for Herons, a physical barrier is your best choice however in this case Seagulls approach the water from above so any wire fencing will not work, netting or a cover over the pond is a must.

To answer simply, YES you can top up your pond even during a hose pipe ban. Fish are covered under the Animal Welfare Act 2006, one of the five needs stated in that law is “To be housed in a suitable environment” this covers a pond being adequately filled and the water quality at appropriate parameters and if this is not the case then a water change is needed or the pond to be topped up. This also allows a full pond clean out to be taken place whether that is by the homeowner or a professional service provider.