How often do I have to replaced the membrane?
1125991
That depends on water quality input, pre-filtration, and other factors. Manufacturer specs claim a 99% rejection rate when new with a minimum rejection rate of 97%. You can determine rejection rate using a TDS meter. Example: if input water reads 300 TDS and product water reads a TDS of 3, then the membrane is working at 99%. But if TDS is say 12, then your membrane is producing at a rejection rate of only 96% and outside of Filmtec specs. See here: http://msdssearch.dow.com/PublishedLiteratureDOWCOM/dh_0920/0901b80380920592.pdf?filepath=liquidseps/pdfs/noreg/609-50165.pdf&fromPage;=GetDoc Please note that Amazon's product page indicates specs for the older TW30-1812-75 which is no longer made. That depends on water quality input, pre-filtration, and other factors. Manufacturer specs claim a 99% rejection rate when new with a minimum rejection rate of 97%. You can determine rejection rate using a TDS meter. Example: if input water reads 300 TDS and product water reads a TDS of 3, then the membrane is working at 99%. But if TDS is say 12, then your membrane is producing at a rejection rate of only 96% and outside of Filmtec specs. See here:... » Read More That depends on water quality input, pre-filtration, and other factors. Manufacturer specs claim a 99% rejection rate when new with a minimum rejection rate of 97%. You can determine rejection rate using a TDS meter. Example: if input water reads 300 TDS and product water reads a TDS of 3, then the membrane is working at 99%. But if TDS is say 12, then your membrane is producing at a rejection rate of only 96% and outside of Filmtec specs. See here: http://msdssearch.dow.com/PublishedLiteratureDOWCOM/dh_0920/0901b80380920592.pdf?filepath=liquidseps/pdfs/noreg/609-50165.pdf&fromPage;=GetDoc Please note that Amazon's product page indicates specs for the older TW30-1812-75 which is no longer made. « Show Less
1125992
Buy a TDS meter on amazon so you can measure the TDS (Total Dissolved Solids) relative to the un-treated water. The RO water should be about 5-10% of the raw water. If it rises to about 20%of the raw water reading the membrane is damaged and should be replaced. The membrane I just replaced was 17 years old and working fine. I just wanted higher production. Filters should be replaced every 1-2 years depending on the quality of the raw water. A membrane might outlive you.
1125993
It depends on your water source and its quality,if you use this residentially or commercially,but I would get a TDS meter(cheap here) and this gives you an idea of incoming water vs your RO system has purified,you can google TDS values and get a idea of good and bad.In my situation my incoming water is around 160ppm and my RO system water is around 7 ppm.You need to do a quick and easy calculation(google it) of your situation,and this will tell you the performance of the membrane and its efficiency.I typically get at least 3 years to a membrane,but check mine often,with my TDS meter. I know this is long winded but every situation is different,it's really very simple once you get the TDS meter,thus being much more accurate,also the membranes are rated for efficiency,so make sure you get one that works for you. thanks,good luck
58807
I recommend to replace your filter every 30 days. This will keep your Fresh Flow from smelling and much easier to clean. Your pets will appreciate what you have done for them.
1624746
Actually yes. You'll know when it needs to be replaced because the flow of the water will decrease. In general the manufactor recommends replacing it every 6 months with your average 10,000 gallon usage. Main reason I purchased this filter was for the chlorine smell reduction and it does a pretty good job at that. Having said that, I will more than likely replace it every 4 months because the Chlorine really get's to me while showering and it's a great neutralizer for that. I hope this helps.
676334
That's about it... The one that came with the cleaner lasted about that long as well.. After average use of once a week and occasional cleaning of the filter, I replace them in 10-12 months. If you have pets, more often probably!!
256425
I think they officially want you to replace them every 6 months but I usually replace them around once a year. It depends on your usage. I have it hooked up to a below counter ice maker & also a drinking water dispenser above counter. When the water starts running slow on the dispenser I replace the filter.
1935921
We replace ours about every 2-3 years. Our son works for a water improvement company and he told us every 2 years. Hope this helps
282697
A few weeks, I think they suggest replacing it every two weeks, but I've used it for six weeks with no complaints from my pup. Depends on weather and usage I would guess also.
1266001
I have never had to replace it that often. Is your water extremely hard? Are there many contaminants in it?
38510
The system manual recommends changing the pre and post filters every 6 months and the membrane every 1-2 years. I don't use a lot of water and my city water is very clear so I am planning to change all the elements every 5 years. Good luck
644542
The outer frame can be used long-term, and the removable filters should be replaced every two days. We recommend to wash the frame every day with clean water, or 70% alcohol for optimal results. Washing the disposable filter replacements is not recommended, as this may reduce the filter efficacy.
707883
The whole filter gets replaced. I don't replace mine every 6 months either; I do it on a as needed basis. I can smell the chorine in the water right away. I typically keep one on hand to change out.
1907972
It depends on how much waste your fish make and how much u feed them. But u can wash the filters out and use them 2 or 3 times before having to use a new one. But if you're like me and just use new ones i replace my filters about once per month. So i would say 12 times a year if you're always using new ones. Ohhh and if u do reuse them make sure u wash them with used tank water, u don't want to wash them with new water... Aka chlorinated water out of the sink... Theis will mess up you're good bacteria in your filter.
554527
I do as they recommend, scrub the dome once a month and replace the 5 layer filter every 6-8 months. The dome gets minerals deposits on it so it is good to clean it. Only takes 5 minutes.
677823
I usually change them about once a month. I rinse them off when I change the fountain once a week. Sometimes I get longer.
763536
The directions say you are supposed to replace the water at least once a year. Also, if you have well water, you are supposed to add a couple drops of chlorine bleach to the water.
1432189
You should clean the filter once /Month in covered pool. Probably every two years it will need replacement
1348362
It depends on how often you run the unit and how much dust/allergens it's filtering out of the air. If it is always running then generally the filter should be replaced every 6-8 months.