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Nav2008, If the water drops any distance it will create more flow so it would be better to have your water level higher..or you caould purchace a small filter ( made for small tanks) called a Azoo palm filter it willl cost you $10 ..it is a small filter that looks like a small power filter it is a sponge filter and you can adjust the flow rate..they make cool stuff for small tanks now..if you cant find it in LFS check out online (Doctor's Foster & Smith for one) as for water change in a small tank ..I have 6 small tanks ( as well as a 55 gal) they range from 3-6 Gallon..to kepp the water quality good I do a 25% water change every other day and once a week I take the little guys out , put them in a cup and vac the gravel and do a 25% water change...that seems to work pretty well..at least I haven't had any problems with my guys.
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