"i just pull out the entire filter and clean"
not good, this is a very common beginners mistake. you need to allow your filter to be established with bacteria for your tank to be able to sustain livestock. everytime you clean out your entire filter you are removing your established bacteria. i would probably leave the filter media alone and only clean out the filter to replace carbon or remove large debris from the sponge, etc. anyways, since you are concerned about water clarity, you should look into running more carbon. also since your tank probably doesnt have a source of nitrogen export you should look to expect to (at the very minimum) clean your glass as often as you are currently doing.
josh