Pool Sand Filter Leaking From Bottom

To troubleshoot and find a water leak, there is a lot of pool equipment to be concerned about. In addition to the salt cell, water flow sensor, and salt chlorination system itself, a saltwater pool contains several additional parts that require your attention.

A gasket or slack clamp in the filter housing of your saltwater pool is typically where a leak in the filtration system develops. Since the vibrations from the pump can gradually loosen clamps and fittings, a pressure gauge or valve that has not been correctly tightened may also be to blame.

Why Is The Sand Filter In My Pool Leaking?

Below are some of the causes of pool filter leaks, along with some self-help solutions.

Issues With Pool Filter Leaks At The Filtering Element Level

Your pool’s filtration system may leak in the vicinity of the filter unit for various typical causes. The key ones are listed below:

Leaking Gasket

The gasket may become pinched if the filter housing is disassembled and reassembled incorrectly. This is particularly risky if you rip or break the gasket while replacing the top of the filter housing because leaks can readily result from this.

Pool Sand Filter Leaking From Bottom

Check to determine if the gasket itself has a fault or if water is dripping from the area of the filter where it is attached. If the gasket breaks, hardens, or tears over time, it might need to be replaced.

Leaky Clamp

A metal clamp that compresses and forms a seal at the top of the housing is used to secure sand filters and cartridge filters to maintain the pressure that rises inside the filter when the pump is switched on. Water can seep out if the clamp is applied improperly or not tightly enough, which will lower filter effectiveness.

If your filtration system, like a Sta-Rite system, uses a clamp assembly with several clamps that must be individually fastened around the filter housing, one or more of the clamps may be positioned wrongly or may gradually loosen as a result of vibrations from the pump. In either scenario, the housing may begin to drip or slowly leak water.

The encounter with the Sta-Rite system has shown that caution must be used because the brackets can occasionally be a little tricky to precisely grasp onto the housing. I’ve checked brackets over time and had to tighten them again because they had become slack over a few weeks.

Drain Valve Leaking

A drain plug or valve is on pool filters to allow water to flow out of the filter housing and periodically wash the filter. The location is typically near the tank’s bottom or on the side of the filter housing.

At the bottom of the filter system, which serves as the system’s drain stopper, there is a screw-on cover. It can be used to rinse out the cartridges, remove sand that gathers at the bottom of the housing, and drain the filter at the end of the season. Its diameter is approximately 2 inches, give or take.

It will leak if the tiny O-Ring is damaged or the plug is not correctly tightened after disassembling. Depending on your kind, you may simply tighten it using a screwdriver or an adjustable wrench, but you must make sure it isn’t merged or left loose.

Pressure Gauge Leak

As its name suggests, the pressure gauge is often situated directly at the moistened filter housing, and when the pump is working, it measures the filter unit’s pressure. The meter is usually unscrewed and carried inside for the winter at closing.

It can be simple to harm the pressure gauge over time by overtightening it while attaching it back onto the top of the filter housing or cross-threading because it has a small gasket and small threading.

Additionally, the gauge often contains a little air valve that opens and closes to let air from the filter escape when the pump is turned on and while cleaning the air out after washing the filtering system or otherwise disassembling it.

When the filter is empty of air, and a little stream of water begins to emerge, you can close the valve. If the valve is not tightened correctly, it will leak.

Filtration Crack

A leak might result from a crack in the filter housing itself. A PVC epoxy resin or adhesive can usually patch the damage based on the scale and location of the leak.

The filter housing should be replaced if the crack is too large or has dented, especially if it is an older filter housing and you cannot bring the dented portion back into alignment. The accommodation must be completely closed and sealed since the filtering system generates and retains pressure when the pump works.

Issues With Pipe Leaks Near The Pool Filter

You can see a sizable amount of pool equipment in the storage room, including a heater, power box, piping, filtration system, additional pipes, pump, a ton of different lines, and additional equipment. Sometimes it might be challenging to identify a leak right away.

This difficulty increases if the equipment is situated on gravel or grass, which can better conceal the leaking water than if it were located on top of bricks or concrete.

Here are a few typical causes of leaks within and outside the pool filter unit.

Plumbing Leak

Check the PVC pipes going into and out of the filter system because the seals might deteriorate and leak over time. I’ve experienced it more than once over the years, but overall the pipe has held up nicely. Small leaks can usually be fixed by oneself by using adhesive or PVC cement.

Swimming Pool Heater

The pool heater system has piping coming into and out of it. A leak from the pool heater system might be mistaken for one from the filter if it is close enough to the filtration system. Pool heaters may also develop a subsurface leak.

Having said that, safe condensation can also be a “leak” from a pool heater.

How to Tell When Your Sand Filter System Needs to be Replaced

Pool Sand Filter Leaking From Bottom

If cared for properly, sand filter systems can last a really long period. However, they will ultimately require replacement, so plan accordingly. If you maintain a regular cleaning routine, your sand filter may last between two and three decades.

Your tank, tubing, and the pump will begin to accumulate mineral deposits and deteriorate over time. It is possible to replace individual components, but eventually, you will have no choice but to buy a brand-new filter.

There is no set guideline for when you must buy a brand-new pool filter system. You should thoughtfully examine the benefits and drawbacks of purchasing a new system, as well as the associated costs. Check out my picks for the top pool filters if you think you need a new system.

Tips for Maintaining a Sand Pool Filter to Keep It Working Properly

Here are a few more pointers to maintain your sand pool filter functioning at its best.

When Necessary, Replace Your Sand

Many pool owners ignore this, but replacing your filter sand every 3 to 5 years or as soon as it loses its effectiveness is crucial. You should return the filter sand to your pool if any of the following occur:

You last replaced the collection three to five years ago.

  • Hazy, filthy pool water
  • Sand accumulations in your filter
  • Sand canals were carved out by water
  • Keep the sand quality high.

I can see how difficult it can be to select the pool sand product appropriate for your system, given the sheer number of options available. Find out which sand suits your particular system by speaking with a pool expert at your neighborhood pool shop.

But generally speaking, I urge you to buy silica sand. The option offers the best performance, durability, and efficiency. Although it costs more than comparable goods, you get what you pay for.

Clean Your Filter Frequently With Backwashing

Backwashing your sand filter is something I advise doing at least twice per two weeks. The filter should also be thoroughly cleaned two to three times a year in addition to that. I typically drain the filter and adequately wash the sand and filtration system tank until the water is clear for this. This is required to extend the life of your filter sand because, occasionally, backwashing is insufficient.

Final Verdict

Sand pool filters can experience a few issues throughout their lifetime, but most of the time, if you can determine the cause, you can troubleshoot and repair them without too much difficulty.

It can be challenging to locate the leak’s exact source if your pool’s equipment is close. The piping flowing into and out of the heater, the heater itself, the area around the pump, the salt call, and other areas are all potential locations for pool leaks.

Leave a Comment

error: Content is protected !!