Frequently Asked Questions
What is Hollow Fiber technology?
How effective are hollow fibers?
The prefilter on my HyperFlow won’t lie flat. What can I do?
How do I backflush?
If you do air lock the filter cartridge, you will just need to reverse the check valves to their forward flow orientation, and pump water forward through the pump a couple of times. You have not damaged the fibers by air locking the filter.
I am having trouble backflushing. I pull back on the pump and no water comes through into the pump cylinder.
My filter clogged very quickly in the silty water I’m filtering. Is there anything I can do to extend the life of my filter?
Filtering very silty water can shorten the life of any filter. Here are some pointers to help minimize the effect of silt on your HyperFlow™:
- Collect water in a pot or other vessel and allow the silt to settle out prior to filtering.
- Strain water with a bandana or large coffee filter prior to filtering.
- Use the Sweetwater® SiltStopper™ prefilter in conjunction with the pump. This will help trap silt particles before they hit the biological microfilter. This will reduce flow rates, but help prolong the life of your cartridge in challenging environments. (We recently updated the SiltStopper prefilter to accommodate the larger tube size of the HyperFlow microfilter. Earlier versions may need a zip tie to make sure the tubing stays attached firmly.)
This color of water typically comes from a high concentration of decaying vegetation adjacent to, or in, streams and lakes, resulting in a variety of organic acids. These include, but are not limited to, tannic, fulvic, and humic acids. These acids and the accompanying water conditions are very hard on ALL types of water filters.
Get your water elsewhere if you can. However, if no alternative exists and you are predominantly filtering these waters, we recommend using an MSR® MiniWorks® EX filter. Its ceramic element will collect all these impurities in its outer-most layer, allowing you to scrub away the clogged portion to restore normal flow rates. If you must use a HyperFlow filter, backflushing frequently will help to minimize the effect of these impurities. When you return home, add 2 drops of unscented household bleach to one liter of water and backflush this solution through the filter. This will help to break up organics that might be clogging the filter and provide the recommended treatment of your system for long-term storage.
Limited use in these conditions will not have a dramatic effect, but extended use can permanently impair hollow fiber media.