Swimming Pool Tips and Reviews

Pool fill water is one of the most overlooked reasons a new pool startup goes sideways. When a fresh plaster, pebble, fiberglass, or vinyl pool gets filled, whatever is in that source water becomes part of the project, including metals, tannins, and fine particulates. For pool service professionals, the risk is real: staining, discoloration, and customer complaints often show up after the surface is already exposed. The fix starts before the hose goes in. Testing fill water for inorganics and organics helps you predict problems, choose the right filtration, and avoid chasing issues with costly chemicals after the pool is full.   A key point is that metals show up in different forms depending on the source. Municipal water is often treated with an oxidizer like chlorine, which can turn dissolved metals into extremely fine particulate iron that still comes out of the tap. Well water can deliver both particulates and dissolved metals at the same time, which is why a simple “pore ...

Green, brown, or oddly tinted pool water can look like algae, but the giveaway is often what you do right before it happens. Many pool service pros see the tint appear right after balancing water or adding shock, especially before a weekend party. When chlorine oxidizes what’s already in the water, it can “wake up” metals or organics and create a sudden color cast even when the walls are clean. The key pool chemistry skill is separating stained water from a stained surface, then proving whether you’re dealing with metals like copper or iron versus organic material like tannins, humic acid, and other natural compounds from a fresh fill.   A simple diagnostic step can save hours of brushing and wasted chemicals: add ascorbic acid. If a green or tea-brown tint turns crystal clear after about a pound (scaled to the pool size), that strongly suggests oxidized metal in the water, not algae. In that case, treat it like metal staining even though the color is floating in the water: us...

Balanced pool water is not just a “nice to have” for clear water. It is the core defense against corrosion, staining, and surface damage that shortens the life of plaster, heaters, and fittings. Water is naturally aggressive, meaning it will try to reach chemical balance by dissolving what it needs from whatever is available. When calcium hardness and carbonate alkalinity are too low, the water can pull calcium and carbonate right out of a plaster surface, slowly etching and weakening it. With vinyl liners, low alkalinity can even draw out plasticizers, leading to wrinkles and premature liner problems. For pool service professionals and homeowners, using water balance targets and the LSI (Langelier Saturation Index) is a practical way to avoid “hungry water” that quietly destroys expensive surfaces.    A big part of pool water balance is controlling pH and total alkalinity as a buffering system. Keeping pH in the 7.2 to 7.8 range supports effective chlorine sanitation while re...

Pool service pros feel the squeeze when chemical costs jump, but the fastest way to protect margin is not “working harder”, it is selling smarter. In this conversation we lay out a clear strategy for positioning PoolRx as a once-a-year pool maintenance upgrade that supports cleaner water, fewer algae outbreaks, and lower chlorine demand. For many routes, the mistake is absorbing product cost even when the customer is the one receiving the benefit. If you already include chemicals in your weekly pool service pricing, adding a simple annual line item can stabilize your cash flow while giving homeowners a concrete, easy-to-understand reason your service delivers clearer water and fewer emergency visits. A practical framework we share is the Good Better Best approach for selling PoolRx minerals. “Good” is buying during spring promotions and simply using the product to reduce your backend chemical spend. “Better” is passing the cost straight through as a one-time annual fee, framed as an al...

Pool algae problems often get blamed on the newest product added to the water, but the root cause is usually basic pool water chemistry and setup. In our conversation with Fred Square from PoolRx, we dig into why a mineral-based chlorine enhancer can underperform when it is undersized, installed poorly, or paired with a dirty filter. The big takeaway for pool owners and pool service pros is simple: start with the fundamentals. Confirm gallons so the PoolRx size matches the pool, keep a free chlorine residual, and make sure filtration is working. If a pool is already struggling, adding minerals without addressing circulation, cleaning, and balanced ranges sets you up for disappointment.   Installation details matter more than most people expect, especially when different filter types change how fast minerals dissolve. With DE filters, Fred recommends breaking down and recharging grids correctly, and placing the unit in the skimmer farthest from the pump to improve dissolution, ...

Black stains after adding calcium hypochlorite (cal-hypo) can feel like a disaster, especially if you’re a pool service tech worried about a drain and acid wash. The key idea: the stain often existed before the shock went in, but it was invisible. Copper sulfate can sit on the floor or walls with a faint blue-green tint that blends into blue water, especially at depth. When strong chlorine hits that copper compound, it changes the chemistry by oxidizing it, converting copper sulfate into copper oxide. Copper oxide is black, so the “new” stain is frequently a hidden metal deposit revealed by oxidation, not a brand-new surface failure. Understanding pool staining chemistry helps you respond calmly and fix the actual cause.   Many pros reach for ascorbic acid for stain removal, and it can work well to lift metal stains quickly. The catch is that ascorbic acid does not remove copper from the pool water. It can reduce and loosen the stain, but the metal remains in circulation, wait...