Practical tools - Pond Season Planner

Prepare your fish for spring
In spring, pond fish need easily digestible but energy-rich food that will not unnecessarily pollute the water. Although their metabolism is not yet working at full speed in the cold water, the weakened animals still need to top up their energy quickly after the winter.
Tetra Pond Wheatgerm Sticks
Test the water parameters
When preparing your pond for the season ahead, good water parameters are essential for a healthy environment. If you know your pond’s water parameters, you can specifically counteract any issues and restore their balance.
Tetra Pond Test 6in1
Tetra Pond PhosphateMinus
Change the water in spring
Over the winter months, excess nutrients build up in the pond, which can cause the water to turn brown, green, murky or putrid. A partial water change using treated water removes excess nutrients, stabilises and revitalises (the water) and makes the pond safe for fish and plants.
Tetra Pond AquaSafe (UK only)
Tetra Pond WaterStabilisier
Tetra Pond WaterBalance
Clean the pond floor and edge areas
After winter, you should check both the pond floor and the edge areas for foul odours and visible pollutants. If the pond floor is covered in sludge (sediment) and possibly even smells foul, the sediment should be removed.
Tetra Pond SedimentMinus
Switch on the filter
When first putting the filter back into operation after winter, a ‘bacteria starter’ should be used so that bacteria quickly settle on the filter again. These are essential for good pond water filtration.
Tetra Pond FilterZym
Check the pond water parameters
Regular water tests are essential in the summer: the rain, sun or too much food can cause imbalanced water parameters. This can result in algae growth, wilting plants or sick fish. By knowing the water parameters, you can take targeted action.
Tetra Pond Peat&Straw Extract
Tetra Pond Test 6in1
Tetra Pond WaterStabilisier
Tetra Test O2
Check the phosphate level
When testing the water, pay particular attention to the phosphate level. Too high a level is often a sign that you have too many fish in your pond or are administering too much or poor quality food. If the phosphate level remains too high over a long period, this can lead to algae in the pond.
Tetra Pond PhosphateMinus
Feed the fish
In the summer, the fish in your pond will largely eat fish food but also enjoy little snacks as the water is so warm that their metabolism works at full speed. You should only administer as much food as the fish can eat within a few minutes. Leftover food pollutes the water unnecessarily.
Tetra Pond Sticks
Tetra Pond Colour Sticks
Tetra Pond Multi Mix
Tetra Pond Variety Sticks
Combat algae
Green water, carpets of algae or threads of algae on the filter, rocks or plants – algae growth is often at its most prolific in summer. Different products can assist you depending on the type of algae.
Tetra Pond WaterStabilisier
Tetra Pond AlgoRem*
Tetra Pond AlgoFin*
Clean the pond and edge areas
In autumn, the amount of leaves, branches and other debris that lands in ponds is particularly high. It is especially important to ensure that nothing is left lying at the edge of the pond or in the water so as to prevent excessive sediment and brown water come spring. Plants should also be cut back.
Tetra Pond SedimentMinus
Tetra Pond AquaSafe (UK only)
Keep an eye on the water parameters
Good water parameters are also particularly important in autumn when preparing your pond and its inhabitants for their ‘winter dormancy’. Balanced water parameters provide a solid foundation for enabling fish and plants to remain healthy over winter.
Tetra Pond Test 6in1
Tetra Pond WaterStabilisier
Tetra Pond PhosphateMinus
Feed the fish
As fish consume hardly any food in winter when the water temperature drops, it is important to sufficiently build up their energy reserves in summer and autumn. The fish can then draw on these over winter.
Tetra Pond Koi Colour&Growth Sticks
Tetra Pond Wheatgerm Sticks
Remove dirt
Winter is a time of rest in garden ponds. Despite this, you should still occasionally remove foliage or branches from the water or edge areas. The cleaner the pond in spring, the quicker it can be prepared for summer. Be careful not to disturb the fish during their winter dormancy though.
Holes in the frozen water surface
If the surface of the water freezes in winter, you should not hack a hole in the ice. This disturbs the fish and subjects them to unnecessary stress during their winter dormancy. Instead, place a pan of hot water onto the ice to slowly melt a specific area or install a pond air pump at the edge of the water.
Do not disturb the fish
Fish are cold-blooded creatures – the cooler the water, the slower their metabolism. As a result, they do not eat in winter and move around as little as possible. This saves important energy reserves. It is therefore all the more important to leave the fish in peace over winter and not disturb them.