Straight answers about pools, hot tubs and keeping them running
A variable speed pump is a pool pump with a motor that can run at different speeds instead of just one fixed speed. It lets an owner run slow, quiet, low-flow cycles for everyday circulation and only speed up when more flow is actually needed. That flexibility is why it replaced single-speed pumps as the … Read more
A cartridge typically lasts somewhere between one and several swim seasons, not a fixed number of months. The real driver is how much debris and fine particulate it processes and how well it’s rinsed clean between uses — a heavily used pool with poor water balance wears cartridges out far faster than a lightly used … Read more
Sand, cartridge and DE filters all do the same job — trapping dirt and debris so water runs clear — but they catch particles differently, need different maintenance, and cost different amounts to run and replace. Sand catches the least, DE catches the most, and cartridge sits in between with the easiest at-home upkeep. What’s … Read more
A filter needs a real cleaning — not just a backwash — when backwashing stops bringing the pressure gauge back down to its normal starting point, when flow through the returns feels weak even after backwashing, or when the filter type simply doesn’t backwash at all, like most cartridge and some DE filters. Backwashing rinses … Read more
Backwashing reverses the normal flow of water through a sand or DE filter, pushing water backward through the filter media to loosen and flush out the dirt, oil and debris that have built up. That waste water goes out a separate line instead of back to the pool. It’s essentially a controlled rinse cycle for … Read more
A pool’s equipment pad is the concrete or gravel area, usually tucked against a wall or fence, where the pump, filter, and often the heater and automation gear all sit together. It’s the mechanical heart of the pool — everything that moves, cleans, and heats the water lives there, connected by a maze of PVC … Read more
A pool needs daily circulation because sitting water doesn’t clean itself. Running the pump pushes water through the filter, which strains out debris, and it carries sanitizer to every corner of the pool. Skip circulation and the filter stops working, sanitizer settles unevenly, and algae and cloudiness can take hold within a day or two. … Read more
A pool pump pulls water out of the pool, pushes it through the filter to strip out debris, and sends it back through the return jets. It’s the heart of circulation — without it, water sits still, chlorine stops moving through the pool evenly, and debris and algae get a foothold within days. What is … Read more
About what you read here. Everything on Pools Shop is general information and our own editorial opinion. We research carefully and we say when the evidence is unclear, but we can be wrong, things change, and no article can know your particular situation. Please do your own research and make your own judgement rather than treating anything here as the final word. Prices, products and specifications around pools, hot tubs and their upkeep change constantly, and what suits one person will not suit another. Check current details yourself, and where a decision involves real money, safety or something you cannot undo, it is worth confirming with a qualified pool or electrical professional before you act.