Hey guys! My 30 gallon is up and running. I used a sand substrate and have a 70 gallon aqua clear filter. My tank was pretty and clear up until about 1 month ago. The water at that point started to get a brown tinged cloudy. I have done water changes to no avail. The water parameters are all WNL amm-0 nitrites-0 and nitrates 10. The fish are all happy. Cories laying eggs, baby platy growing like crazy. I just want my clear water back so I can see my pretty babies better! Help!!!!