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How to build a waterfall

Garden pond with pond plants

There are few things more pleasing than the sight and sound of running water in the garden. Many of us would like a waterfall or watercourse of our own but are unsure how to build or install one. The good news is that they are easy to create - and you don’t even need a pond!The basicsTo create the most basic of waterfalls you simply need water to drop from one level to another below it....

How to dechlorinate tap water for a pond

Whenever you use tapwater to fill or change water in a pond, you must dechlorinate it. Chlorine is a gas which is added to tapwater to kill bacteria, viruses and protozoans, so add untreated tapwater to a pond and it will kill good bacteria (like filter bacteria,) as well as bad. New pond syndromeNew ponds and filters don’t contain the beneficial bacteria that are needed to convert...

How to treat Ich in a reef tank

Clown Fish

Ich is an abbreviation of the word Ichthyophthirius multifiliis, the scientific name for Whitespot. Strictly speaking, Whitespot is a freshwater only disease, and the Whitespot we see on fish in marine tanks is caused by a parasite called Cryptocaryon irritans, not Ichthyophthirius, but the symptoms look similar so the name has stuck.If a fish gets Cryptocaryon in a marine tank it can be real...

How to raise Calcium in a reef tank

Calcium is one of the elements we recognise the most. Its what’s in our bones and teeth, and we ourselves obtain calcium from milk and dairy. Corals need Calcium too and if they aren’t doing well, after addressing light and water flow, Calcium is usually the thing we think we need to raise first.But reef chemistry isn’t as simple as that and corals consume many more elements including M...

What is the best powerhead for a reef tank?

Swell UK Blog Fish Tank

Water movement is one of the most essential parts of any reef tank. Corals use water movement to bring them their food and wash away their waste, and although some corals can survive without light, none can survive without flow. Traditionally, powerheads were used to move water around the tank. A powerhead is an aquarium water pump, aimed originally at fitting to the top of an undergrave...

How to build a raised pond

Raised ponds have many benefits. They don’t have to involve digging, they can prevent pets, children and wildlife from falling in and they can be built in a day, no problem. They look great too, and can really enhance a garden or patio. You can even disassemble and move house with them!MaterialsThe easiest way to build a raised pond is with railway sleepers. New or old, they are very st...

How to remove phosphates from a reef tank

Swell UK Marine Coral Advice

Phosphates are a big problem for the reefkeeper. High phosphate levels fuel nuisance algae and retard coral growth, and every reef tank needs to employ some sort of phosphate control. Allow phosphates to build up, especially in new tanks, and your clean, pristine reef tank will turn into a slimy, algae-filled mess. Where phosphate comes fromPhosphate, and Phosphorus, are in every liv...

How to get rid of green algae in a pond naturally

Swell UK Pond Water Leaking

Those daylight hours are getting longer and longer as we go into May. The birds are singing, there’s blossom on the trees and the fish are active and hungry. Some are even spawning. But as idyllic as it all seams, the nations ponds are about to enter the trouble time for green algae problems. Greenwater and BlanketweedGreen algae can be broken down into two main types - Greenwater,...

How to Heron proof a pond

Facebook groups are filled with pond owners either seeing Herons around their ponds or actually taking fish. Increased time at home has meant that many of the grey marauders are being caught in the act when homeowners would usually be out at work, or they’re being caught by increased use of CCTV.There are thought to be around 10,000 herons in the UK and they are the number one raider of pon...

How to keep an Oscar

Oscars are some of the most popular pet fish because of their character, intelligence and the way they interact with their owners. They are ruled by their bellies - a good characteristic for pet/owner bonding as they’re always hungry and will beg for food, and take an interest in what’s going on outside of their tanks too. But lots of adult Oscars get rehomed, and some get a bum wrap from uns...

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