I would recommend rinsing/cleaning your filter socks in something much less toxic than your washer/dryer.
This a quick blog written a fews years back that never made to publication...Sorry for the tone as this just my two cents! -I probably should have edited before posting it here but then I was like you know WHATEVER!! lol
"Reef tanks and the washer/dryer effect.
I often wonder how some tank owners keep a lively system with some of the methods of scrutiny they use because I am about to present one the worst practices I’ve ever heard of. There are four types of filtration associated with maintaining a reef tank. They include biological, chemical and mechanical forms of separating unwanted elements from the water column. Removing a set volume of water (the a-typical “water changeâ€) is our forth and most influential form of filtration.
Typically when we do water changes it’s time to change out materials of mechanical filtration. Mechanical filtration includes the use of things like filter pads, filter floss, as well as filter socks. I often hear hobbyists reusing their filter pads and filter socks in a manner with which makes me cringe. They use their washer and dryer to clean these things!
I never understood this method of recycling, as it is quite obvious that elements present within washers and dryers definitely do not belong in our tanks. Some will tell me “well I don’t use detergents when I wash them†or “I only use the dryer to dry the socks after I’ve rinsed them with filtered water†Wait what!? It’s very obvious the detergents we use when washing our clothes are present in every component of a dryer or washer; and will most definitely end up on these materials. This method seems counterproductive to me. In fact washers and dryers have been tested after cycles only to present the same caustic elements I’ve always predicted were there. They are not “clean†like your clothes are after they’ve run their cycle and will deposit these same elements onto anything you put in them.
Materials used for mechanical filtration are perfect breeding grounds for nitrifying bacteria and it makes no sense to kill off cultivations with caustic elements like bleach. I have two alternative solutions to the practice of using washers and dryers that will help anyone currently using this technique. First is don’t use the washer or dryer. Period. Second is a method I believe is not only efficient but also extremely cost effective.
When I perform my water changes I keep two five gallons buckets full of removed water to rinse my filter socks in; one for the initial rinse and the second to insure the sock is thoroughly cleaned. This allows bacteria that have colonized on the immense amount of surface area associated with filter socks to remain intact. Another benefit of this method is being able to remove amphipods from the buckets and return them to the system as they inevitably end up inside filter sock materials.
Moreover, if you use washers and dryers for cleaning your “reef towels†I would suggest eliminating this practice as the same elements I just mentioned most definitely exists on these towels. It is best to give your arm a thorough rinse with filtered water beforehand and work with a splash or drip towel underneath you. Not worrying about drying your hands/arm in between introductions can be irritating at first but trust that seasoned hobbyists are accustomed to a wet arm and in some cases wet pants! In other words reduce the amount of time your arm or hand is in the water column, as this will eliminate the impact of these negative variables."