Results for "hydrostatic valve"

According to my pool's behavior, the water level started dropping steadily yesterday even though nobody's been swimming, and now I'm wondering if the hydrostatic valve is leaking. The water level drops consistently even when the pool isn't in use, and I've already ruled out obvious surface leaks around the skimmers, returns, and visible plumbing.

From my understanding, hydrostatic valves are designed to prevent the pool shell from floating during high groundwater conditions, but I'm wondering if they can work in reverse - allowing pool water to escape when groundwater levels are low or if the valve mechanism fails. The water loss seems to correlate with our recent dry spell, which has me questioning whether the valve could be stuck open or damaged.

Is it technically feasible for a hydrostatic valve to cause pool water leakage, and if so, what specific failure modes should I be looking for during inspection?…more

Replaced my old above-ground pool with this inground concrete setup that needs major repairs, but I've never dealt with draining one before and I'm worried about structural damage. The pool will be without water for potentially several weeks while contractors complete the work.

What are the specific time limits before hydrostatic pressure becomes a concern? Are there differences in safe empty duration between inground concrete pools versus above ground pools with vinyl liners? I want to avoid any structural damage or liner issues during this extended maintenance period.…more

Already dealt with my 8-year-old pool's CYA climbing to over 100 ppm, way past the 30-50 ppm sweet spot — complete drain or partial fix? This is causing my chlorine to become significantly less effective, requiring much higher chlorine doses to maintain proper sanitization.

I've researched various approaches but I'm getting conflicting information about whether there are chemical products that can neutralize or reduce CYA levels directly. What are the proven methods for bringing cyanuric acid levels back down to the optimal range? I need a systematic approach that will actually work without wasting time on ineffective solutions.…more

Planning to winterize my new inground pool using the same routine that worked perfectly on my old above-ground, but worried the chemical and equipment needs are completely different.

What are the specific steps I should follow for proper winterization? I'm particularly concerned about getting the water chemistry balanced correctly and protecting my filtration system and plumbing from freeze damage. Should I be targeting specific chemical levels, and what's the proper sequence for draining, cleaning, and applying winterizing treatments?…more

I turned to a second opinion after my pool contractor quoted $3,000 to replumb my entire return system when I suspect these leaking jets might just need a simple repair. I keep losing water and can't pinpoint where it's going. The jets seem like the obvious suspect since they're these openings in the wall, but I honestly have no clue how they're put together or what could go wrong with them.

Is it even possible for the actual jets to leak? And if so, where would the leak typically happen - like around the edges where they meet the pool wall, or somewhere else entirely?…more