How Often Do You Change Sand In Pool Filter
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Silica sand filters are price effective, they work well, and they exercise not have a huge amount of ongoing maintenance day to 24-hour interval. There might be better options for pool filters that waste product less water, are more menses efficient and are capable of removing effectively physical debris from the water than sand filters but that does nothing to diminish the popularity of sand filters. You actually could make a very skilful instance for upgrading to a more efficient filtration system that has much less resistance to period than a giant tank of sand that you are pushing water through.
A well designed and efficient plumbing arrangement would be one that is piece of cake for the filtration pump to draw and push water through. If you had a system that was incredibly hard to push water through this would result in a less efficient plumbing organization. This is actually kind of what a sand filter is, relatively speaking, and this is why an upgrade to something with a much better flow design should always be on the table if you currently own a sand filter. Earlier you consider spending whatever money on a filter service you should counterbalance the comparing of toll for servicing the filter you have now versus replacing with a new model. There could be enough advantage for you to upgrade already, and the money spent on service to the old filter might be better off going towards the purchase price of a newer, more than reliable and more than efficient filter system.
The single biggest problem with pool sand filters is the multiport valve they use to select filtration settings such as backwash, rinse, wintertime, close, recirculate and filter. Convenient for the pool operator, but definitely a huge flow restriction when compared to pretty much every other valve, fitting and slice of equipment within your filtration system. The maximum designed flow rate, a very important number relating to the volume of water your filter can handle before the potential exists for damage to internal components, is specifically low in sand filters versus any other filter blazon. Take a look at this comparison betwixt a sand filter and a cartridge filter, where both of these filters are of suitable size for a 20x40' swimming pool.
Hayward S270T - 350 lbs sand filter
Maximum design flow charge per unit = 74 GPM
Hayward C4030 - 425sf cartridge filter
Maximum design menstruation charge per unit = 150 GPM
Both of these filters are very large, just non the largest available for either option. Both of these filters will take no trouble keeping an actress deep 40,000 gallon 20x40' pool clean and clear, only as you can see those flow rates are majorly different. This is especially important since average ane horsepower pool pumps tin can easily move eighty+ GPM and new variable speed pool pumps in the 2 to 3 horsepower range like the EcoStar, TriStar 950 and IntelliFlo are easily capable of 150+ GPM so long as the plumbing organisation can handle this much flow. If y'all have a sand filter, and you do non have a flow meter telling you how many GPM is moving through your organization, then you are about certainly overdriving your sand filter. This is very important to know.
How does a sand pool filter piece of work? - A sand filter is a pressure vessel, substantially a tank filled with sand. Water is applied under pressure from the pump and forced through graded sand which removes all but the smallest physical debris before the water is collected make clean on the other side of the sand and continues on through your plumbing system and back to your pool. Backwashing, a term synonymous with pool sand filters, is exactly as information technology sounds in that the h2o is sent backwards through the filter from the direction information technology usually travels. This forces all the concrete debris that is sitting in the first few layers of sand to wash out through the waste product pipe or bleed on your pool filter. When the pump applies water pressure the entire filter tank swells in size, a quite unsettling feeling when you lot are standing adjacent to one while doing this as it really shows you how much pressure level and lower exists in these systems. The filter weighs hundreds of pounds and feels as solid every bit can be, despite beingness made from resin. But when force per unit area applies from the pump the entire tank swells like an inflating balloon. Definitely never take the potential for danger lightly with a pool filter.
A quick recap here, a sand filter is a pressure vessel and swells and contracts every fourth dimension you lot turn on and off the pump, and it is rated for a sure maximum flow rating that many pool owners accidentally exceed for the unabridged operating life of the filter. So now we can get-go to talk about the main bespeak of this article you are reading, which is when should you replace your filter sand? As an experienced pool technician I tin easily tell you that most of the people who modify their filter sand, or call back that they need to change their filter sand, really do non demand to practise this. Worse than this they specifically should avert irresolute the sand in their filter.
If you want to follow the book nearly how frequently you should modify your filter sand the answer will be either every three to 5 years, or every 5 to 7 years, depending on who you lot enquire. But is this really good advice? I don't think so. These established values for sand filter changes were adult and agreed to in a different age of pool equipment. Pumps were smaller and filters were built to last. Every pool pump these days is admittedly gigantic, and pool filters, much like everything else these days is congenital to work, but not to concluding. Parts are made using the cheapest, thinnest possible materials, so these cheaply made filters are attached to pumps that provide way likewise much menstruum. The end result is a filter that works, only if you lot try to change the sand every 3 to 5 years you are near certainly going to encounter a problem.
How long does filter sand final? - Pool filter sand does wear over time much like play sand versus a sharp sand or brick sand. Once the edges of the sand take worn downwards the filter will have less filtering ability compared to what it was when it was new. Additionally a puddle filter is the garbage can for every last icky thing that finds its manner into your pool. After a few years time this becomes a bacterial breeding grounds. Sand filter changes every 5 to 7 years is how I was trained many years agone. Notwithstanding information technology was not exactly linear, it was told to me as every 5 to 7 years, or when there is a problem. This is important, because virtually pool owners think sand changing is one of the offset things you should await to when the pool is cloudy or green. Filter sand is probably the concluding thing you should await at, percentage wise. Chances are extremely high that your problem with water quality is either a chemical imbalance of some kind, or y'all just are non running the filter enough. It should be running 24/7 any time yous are having h2o quality problems.
Equally a service technician I have regularly removed sand filters from service that were still operating on original sand after 25 years. There is no rule that says you must change your sand. Only a recommendation that if y'all have a problem with your water you might demand to change it. If you don't accept a problem in the first place then I am of the opinion that y'all should exit your filter alone. If your puddle is green and you lot think maybe it is the filter sand, it is probably a chemistry issue in well over 90% of cases.
Why you should NOT change your filter sand - Pool filters used to be made to last a half century or and then, with some models even being stainless steel and strong plenty to withstand decades of use, or even a direct strike with a vehicle...almost. Pool filters manufactured today are mass produced with resin and e'er-cheaper materials, gaskets and moving parts. The end result is a product that works, but does not last. Add together to this the fact that the filter is constantly exposed to chemicals, changing pressures, reversing pressures and concrete droppings and you might start to see why opening yours to change the sand might be a bad idea. While I used to perform filter sand changes regularly at the beginning of my career this is something I would rarely recommend these days. The chances of damaging something within the filter during the sand removal process is very high. Even when you're conscientious, many times the internal lateral associates parts are hanging on by a thread and even the lightest disturbance causes them to fail immediately in your paw, or neglect in a way that you do non notice until the side by side mean solar day when all the sand from your filter is now on the floor of your pool.
When a filter sand replacement service phone call goes well it is a quick, albeit gross chore. When a filter sand change does not get well I spend the time cleaning the erstwhile sand out, bringing in hundreds of pounds of new sand, put it in the filter, clean up and start upwards the system with a lengthy backwash to foreclose the pool from going cloudy from the new sand. Just then the next day I get a phone call from you in a panic considering the floor of your pool is covered with hundreds of pounds of sand. The standpipe or laterals broke. You might exist able to club replacement parts. If they brand them still, and if they volition non have longer than 48 hours to get (special social club parts is six weeks) you can buy new sand, replace the broken function and brainstorm cleaning hundreds of pounds of sand out of the puddle. Remember 1 office already broke within the filter, so unless you replaced everything than another failure seems probable. This is why you should strongly consider not replacing the sand in your filter.
A new cartridge filter is a lot more money than a sand filter, just they are a much ameliorate filter in terms of what they tin can remove from the water, as well every bit being vastly better from a hydraulic efficiency standpoint. On paper the increase in system efficiency will probably pay for the difference in price between a sand filter and a cartridge filter over the course of its service life. If you factor in that you might pay a few hundred to take your filter sand inverse by a professional person, and at all-time you take an old and possibly failing filter, for certain that few hundred would exist better allocated towards purchasing a new, more than efficient cartridge filter.
Channeling sand - If the sand in your filter solidifies from age or adverse chemical situations then this would be ane of the only reasons I would explore irresolute the sand in your filter, as this could happen to a fairly young filter that nonetheless has some life left in it. Calcium hardness and a scaling land according to the LSI can cause your h2o to calcify and solidify your sand in your filter, such that the water no longer filters nice and evenly, just has worked channels into the sand creating pathways of low resistance to menses through. The end result is that water is going through the filter just no water is actually being filtered.
Bacterial buildup - The stuff inside a sand filter gets pretty gross later on a while. A cartridge filter gets icky later a one-half flavour of operation so yous can just imagine what a sand filter is like since it never gets cleaned out in the same thorough fashion that a cartridge filter does regularly. Instead of changing the sand to bargain with the bacterial buildup in your sand filter yous tin can also look towards a chemical treatment and cleaning to regenerate your sand media. This is a maintenance particular that you would 100% endeavour earlier y'all tin can even start to consider replacing the sand in your filter. If you have non been using a sand filter degreaser
Sand Filter Cleaner
I would say that regular use of a filter cleaner product is the but long term maintenance that sand filters demand other than backwashing of course. Do non look quickly to changing the sand in your filter as the answer to water quality issues. Filter your water 24/7 and ensure y'all are inside tolerance for your water chemistry as that is almost always the source of water quality and clarity problems. Sand filters wear out simply the consequence would exist a dull and steady refuse over years and years. Decades. Bacterial buildup and channeling is a concern but those are both best treated with proper water balancing likewise equally a filter cleaning treatment, not sand changes. Finally, with the chance that yous overdrive your filter beingness high, or at least operate it at the very maximum operating range as a guarantee, and with how cheaply things are made these days, changing the sand in your filter is every bit likely to cause a trouble as it is to fix one. Perhaps even more than so.
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