Two questions: Should I replace old filters with brand new ones? I read it's bad to do that and you should never have to replace the filter. Is the best thing to really rinse the filter in the same water from your tank to keep the beneficial bacteria and lessen the chance of a mini cycle? Secondly, I ordered a 25ft aqueon water changer that supposedly pumps water from the faucet into the tank... Isn't that bad? Does it matter when you add the tap water conditioner? Either before or after? Any tips for water changes for my 2 tanks (30 and 55 gallon) Thx guys