As temperatures rise and your pond comes back to life, now is the perfect time to make sure your filtration system is ready for the growing season. A well-maintained filter plays a vital role in keeping your pond clear, balanced and healthy, not just for the aesthetics, but for the well-being of fish, plants, and the entire aquatic ecosystem.
Whether you're refreshing an existing setup or starting from scratch, here’s our guide to getting your pond filtration sorted for this spring and summer season.
Why Does Filtration Matter?
Pond filters do more than just keep the water looking clean — they help maintain a stable, healthy environment by:
- Removing debris such as leaves, algae, and waste
- Breaking down harmful toxins such as ammonia and nitrites
- Circulating water, which helps with oxygenation and prevents stagnation
Quality filtration is essential, especially in warmer months when fish become more active and plants begin to grow more vigorously, both of which can increase nutrient levels and lead to algae blooms if not properly managed.
How To Get Your Filter Ready
If you already have a filtration system in place, spring is the time to give it some TLC. Here’s our checklist for what to do:
1. Give it a clean
Start by removing any sludge or gunk that’s built up over winter. Take out the filter media and rinse it, preferably using pond water (not tap water!) to preserve beneficial bacteria.
2. Inspect and test
Check for cracked pipework, perished seals or signs of blockages. If you use a UV clarifier, replace the bulb — even if it still lights up, its effectiveness can drop off after a season of use.
3. Help the biology bounce back
Once your filter is reassembled and flowing again, it can take time for the beneficial bacteria inside to re-establish, especially after a deep clean or long winter shutdown. To give your system a boost and speed up the maturing process, we recommend using Evolution Aqua Pure+ Filter Start Gel.
This powerful gel-based formula contains live bacteria and is designed to cling to your filter media, kickstarting the biological filtration process and improving water quality faster. It’s particularly useful in spring when your pond’s ecosystem is still finding its balance.
4. Restart gradually
With everything cleaned and boosted, switch the system back on and monitor flow rates. Try to avoid adding too many fish or feeding heavily straight away — let the filter catch up first.
How To Set Up a New Filter System
If you're new to pond keeping or looking to upgrade, here’s what to consider:
- Size matters – Choose a filter system that matches your pond’s volume and fish load.
- Types of filtration – Most systems combine mechanical (removing physical debris) and biological (breaking down waste) filtration. You can also add a UV clarifier to help control green water.
- Positioning – Ensure your pump is well-positioned to draw water effectively from the pond’s base, where most waste collects, and direct it through your chosen filter system.
Take a look at our extensive range here. Still need help choosing the right equipment? Our team at AquaLiners Direct is happy to offer advice on filters, pumps, and plumbing tailored to your pond size and needs.
Don’t Forget! Regular Maintenance Is Required
Once your filter is up and running, make it part of your routine to:
- Check and clean filter sponges or media as needed
- Inspect water flow and clarity
- Monitor water quality with test kits (especially ammonia, nitrite, and pH levels)
A bit of regular upkeep goes a long way in keeping your pond healthy all season long, and can also help to ensure your system is in great shape to go again the following season.
Ready to Get Started?
Browse our range of pond filters, pumps, UV clarifiers and fittings online at AquaLiners Direct, or get in touch if you need help finding the right setup.
Here's to a clear, clean and thriving pond this season! 🐟
