I have a 2.5 gallon tank with a java fern and 2 snails, 1 ghost shrimp, and a 1/4 inch x-ray fish,(now dont freak out this little fish is only being raised in here until his pond home is finished, anywho... the water doesnt smell gross it just smells like a musty plant like if you smelled wet wood or something, and its getting cloudy ive been doing weekly water changes and it hasnt really helped i realize i might need to do 2 water changes a week but i just wonder why it smells like wet wood rather than gross, because in my past experience freshwater tanks smell gross when they have bad water... o my tank is 3 months. and it has no heater or filtration, n my little x-ray and ghost shrimp are fine, and i know if I had bad water quality my ghost shrimp wouldnt be doing great.