Ok so here's my idea. i have a 37 gallon tank and i also have a friend who has a 75, 50, and a 20 gallon tank which i help him change. what we normally do so fill up our 2.5gal jugs and head out to meijer and fill up all of those jugs which takes a really really long time. my though is to use a whole house filter with attachments to connect to the faucets and fill the tanks that way. the reason why we don't do it now is that his piping is loaded with lime and mine is loaded with lime and iron. it's kinda bad lol. what i was thinking was using that with a 5 micron filter and to give you a example of how small that is the polio virus is 10 microns. do you think that this would work??