We do not use alumina/aluminum components or derivatives in our filters.

We suggest discarding your filter elements in the trash.

Instructions are attached to each product on their product page, or you can find all of the instructions available here  https://prooneusa.com/instructions/

You will find warranty guidelines on the last page of your instruction booklet.

ProOne^® products are made of both domestic and imported components and assembled in Michigan.

TDS stands for “total dissolved solids”. This means that a TDS meter is measuring the total amount of minerals within your water. Because our filter elements remove only the bad minerals while leaving in the good, a TDS test for ProOne filtered water may not vary much from your original water source.

Please note that if you are looking to test for total contaminant removal, you will need to perform an actual water test specific to the contaminants of concern.

Our filters take out the bad contaminants while allowing the good minerals in your water source to pass through. Our filters will not change the PH of your water.

While on a lab report page, use the key command “Ctrl F” on a PC or “Command F” on a Mac to search for a  specific contaminant and its removal rate.

Whether you use 1, 2, or 3 filters in your system you will have the same quality of water and contaminant reduction. Using one of any size filter at a time will have a general lifespan of up to 6 months with continual daily use. Using multiple filters at the same time will add their lifespan together and increase the flow rate. So, using two filters at the same time will give you up to 12 months of filtration and increase the flow rate. Using three filters at the same time will give you up to 18 months of filtration and have the fastest flow rate. The 9″ filter will increase the flow rate from a 7″ filter installed in the Big+ system by approximately 15-30 minutes within their general 6-month lifespan. The 7″ filter will increase the flow rate from a 5″ filter installed in the Traveler+ system by approximately 15-30 minutes within their general 6-month lifespan. General filter use will be geared toward system gallon capacity.

Please see the chart below to help you find the correct configuration for your system.

Scrub the filter under cold running water with the green side of your sponge (not allowing water to go inside of the blue stem). After scrubbing your filters, cycle three batches of water and dump them, start drinking your water on the fourth cycle for the best taste.

You can filter city and well tap, lake, stream, rain, and river water. We do not recommend filtering ocean water, or pre-filtered water that has already gone through an exchange of filtration.

We suggest running a blue (or red) dye test to make sure your filters are working properly. See the instructions below:

Please ensure the filters are fully scrubbed and cycled through before testing. Place a cup under the stem of each filter you are using in the lower container of your system. This will capture the filtered water so we can see if there is a change in color. Fill the upper container with water until your filter is fully submerged and then add no more than 2-3 drops of blue food-grade liquid dye (or red). After the filter processes the water take a look at what was caught in the cup(s) below. If the color of the water is noticeably different than the color of the water in the top container, then you know the filter is still removing contaminants. There will still be a bit of a blue tint because the food-grade quality of the dye is still able to make it through, but that will disappear after a cycle or so. The water is still filtered and purified with a slight tint. If the tint of the water does not change after the filtering process, then you know it is time to replace your filter, or the filter may not be fully performing.

We recommend completely filling your upper container with water so that the filters are fully submerged as needed but at a minimum of every 3-4 days.

We recommend cleaning your system and filters at least once a month.

Our ProOne® G2.0 gravity filters do not use coconut-based or corn carbons.

Using one of the ProOne G2.0 filters at a time will have a general lifespan of up to 6 months with continual daily use, using more filters at a time will add their lifespan together and increase the flowrate at the same time. So using two filters at a time will add up to 12 months of filtration and increase the flow rate. Using three at a time will add up to 18 months of lifespan and have the fastest flow rate.

If you will not be using your filter for more than 4-7 days you will want to dry them for storage.

Properly storing your filters is important when your system is not in use. If not using your system for more than 4-7 days, remove the lid and drain any water in the upper and lower containers. Remove the ProOne G2.0 water filters from your system and allow it to air dry. Wrap your filters in a terrycloth towel and store them in a dry, cool place. Do NOT put the filters in a plastic bag or any enclosed container. Do NOT allow filters to freeze when wet. Do NOT place filters in a microwave oven. When you use your system again, simply reinstall the filters and discard the first supply of water from the lower container. With the ProOne G2.0 filter, it is NOT necessary to keep the filter saturated at all times.

When preparing for a trip with your gravity system, you will want to allow your filter elements to dry out. Wrap the filter elements in a cloth and store them someplace safe. If storing filter(s) inside of the gravity system, you will want to make sure you have ample padding so that the filter elements do not break.

Our pressurized systems do use coconut carbons.

This is oxygen in your water. Allow your water to run through the system to push all of the extra air. It will disappear after time.

Unscrew where the connection is leaking and add extra Teflon Tape around the threads of the fitting and reinsert tightly back in the system.

Yes, this is normal and the water is safe to drink. The more you use the system, the less air you will see in your water.