Astralpool Top Mount FG Fibreglass Media Filter

Filter sizing is based on your pool volume and the flow rate of your pump. An undersized filter runs at too high a face velocity, which means poorer water clarity and more frequent backwashing. An oversized one is money spent for no gain. Give us your pool dimensions and pump model and we will specify the right tank size.

Fibreglass tanks resist corrosion, which is the main reason older steel filters fail. In a salt chlorinated pool, and in Auckland's coastal and humid conditions, corrosion resistance is what determines whether a filter lasts five years or fifteen. Fibreglass also handles the pressure cycling of regular backwashing without fatiguing.

This is a media filter, which is most commonly run on filter sand or a glass media alternative. Sand generally needs replacing every five to seven years as the grains round off and lose their filtering edge. Glass media typically lasts longer. We can advise which suits your water and handle the media change for you.

Backwash when the pressure gauge reads around 8 to 10 psi above the clean starting pressure, not on a fixed schedule. Backwashing too often wastes water and flushes out the fine debris layer that actually improves filtration. We record clean pressure at commissioning so you have a reference point.

The multiport valve sits on top of the tank rather than on the side. Top mount is the most common configuration on Auckland residential pools, is generally more compact in a tight plant area, and is straightforward to service. If your existing filter is a side mount, the plumbing will need adapting, which we assess during the quote.

Most likely, provided the filter is sized to your pump's flow rate. A mismatch in either direction causes problems, so we check pump output against filter capacity before recommending a model rather than assuming a straight swap.

A straightforward filter replacement is typically a half day job including drain down, removal, positioning, plumbing, media loading, refill and commissioning. Where pipework needs rerouting or the plant area needs tidying up, it can run longer. We give you a firm timeframe with the quote so you know when the pool will be back in service.

The Astralpool Top Mount FG carries a 2 year manufacturer's warranty. Your purchase is also covered by the New Zealand Consumer Guarantees Act. We register the warranty for you, and if an issue arises we assess it on site and take it up with the supplier ourselves.

Both are fibreglass media filters and both perform well. The main difference is warranty position: the BWT ES range carries a 10 year tank warranty against the Astralpool's 2 years, and offers features such as an inline backwash sight glass and quick connect plumbing. The Astralpool is the more economical option. We are happy to price both so you can decide.

Filtration is the quiet foundation of a clear pool, and getting the size and installation right matters more than the brand on the tank. We have specified and installed filters on Auckland pools since 1992, we match the filter to your pump rather than to a price point, and we service what we install. Call 09 570 4797 or email info@sparklingpools.co.nz.