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Pondmax Ideal Seal MS290 Black Underwater Sealant Wet/Dry Adhesive - 290mL
Sale price$38.99
Regular price$41.95
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PondMAX Algae Block - Prevent and Eliminate Algae 4 x 15g
Sale price$18.99
Regular price$19.95

PondMAX Air Pump CT202
Sale price$49.99
PondMAX Bio Balls - Large (Pk of 100) 42mm
Sale price$65.99

PondMAX Clarifier Bacteria - 900g
Sale price$186.99
Pondmax FAQ's
Start with your pond volume and aim to turn it over about once an hour, then check the pump's output at the head height you are lifting to rather than its maximum figure. A 5,000L pond with a 1.5m waterfall needs a pump still delivering around 5,000L/h at 1.5m. If the pump also feeds a pressure filter, allow for the restriction that adds.
Both are submersible Pondmax pumps. The EVO II series runs on mains power and covers the widest flow range, from the EV1900 up to the EV13600. The EV-DC models run at low voltage through an external transformer, which suits long cable runs and installations where you would rather not have mains voltage near the water. A backup battery box is available for the EV pumps.
A UV clarifier only treats free-floating algae — the kind that turns water pea-green. It clumps the cells so the filter can catch them. It will not touch string algae or blanket weed, and it does not replace filtration or bacteria. If your water is green rather than dirty, the PF-series pressure filters have UV built in.
The PS series is sold as a matched pump and panel kit — PS200, PS600, PS1700 and PS3500 — and runs with no mains connection. A separate solar battery backup unit and a solar smart switch are available if you want the pump to keep running when the sun goes off the panel.
Follow the label on the product you are using — Pondmax Clarifier Bacteria, BactiMAX and BioNatural all have their own rates. As a general pattern, beneficial bacteria are dosed more often when water is warm and the pond is actively feeding, and cut back as temperatures drop and biological activity slows.
Yes, if the pond holds fish or an established biological filter. Chlorine and chloramine in mains water kill the bacteria doing your filtration and stress fish. Pondmax DeChlorinator comes in 500mL, 2.5L and 5L; treat the volume of water you are adding, not the whole pond.











