Results for "groundwater pressure"

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

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

Looked like just a minor water drop in my fiberglass pool last month but now it's become a massive leak draining faster than any evaporation. I've heard people say fiberglass pools don't leak like other types, but that can't be true, right?

I'm wondering if there are common spots where fiberglass pools develop leaks? I'm hoping this is something that can actually be fixed without having to tear the whole thing apart. Has anyone dealt with this before and found a solution that actually works?…more

During winter I'm trying to decide between keeping my pool closed all season to save on chemicals versus opening it and dealing with the constant money drain from maintenance. Every time I go to the pool store they're trying to upsell me on some expensive treatment or service. I'm thinking about just closing my pool for an extended period to avoid all these costs.

Can I keep it closed for longer than just the winter months? What's the maximum time I can leave it shut down without causing permanent damage? I'd rather do the work myself when I reopen it than keep throwing money at these overpriced pool companies all season long.…more

Three different sources are telling me wildly different drain times for my above ground pool — my contractor says 6-8 hours but the pump manual clearly states 2-3 hours maximum. Now they want to charge me $300 just to drain my above ground pool for the winter! That's ridiculous.

I know I can do this myself but I want to make sure I don't mess up my liner or damage anything. What's the safest DIY method to drain it? I've heard about using pumps or some kind of siphon thing, but I don't want to risk doing it wrong and having to buy a whole new pool setup.…more

Pulled off a perfect shock treatment on my old above-ground pool for this exact cloudy water mess, but my new inground pool still looks like milk. I can barely see the bottom and it's honestly embarrassing with summer parties coming up.

I'm pretty sure I need to do something with the chemicals and maybe run the filter more, but I have no idea what the right steps are or how long this is going to take. Should I be testing the water first? Adding chlorine? Help me get my pool back to that beautiful clear blue!…more

Called three different pool companies this year about whether my fiberglass pool needs a liner and got three different answers—I'm done with the confusion. With vinyl pools, I understand you need a liner that eventually needs replacement every 8-10 years. But what about fiberglass pools - do they also require some type of liner system to hold the water?

I'm specifically looking at installing a 16x32 fiberglass pool (approximately 24,000 gallons) and want to understand all the long-term maintenance requirements. The sales rep mentioned something about a gelcoat surface, but I want to make sure I'm not missing any liner costs in my budget planning. Do fiberglass pools need liners installed, or is the structure itself sufficient to contain the water without additional waterproofing materials?…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