Hi all , I have a fluval Roma 200 ltr tank plus filter/pump heater set at 25c various plants , some lava rock and mangrove root , tank has been going 5 weeks now , did a fishless cycle and after 2 weeks added 4 Molly's and 6 harlequins week later 3 Cory's and 15 cardinals, I've done a 10% water change and added aqua care bio boost plus tap water conditioner and 2 days ago 10 evolution aqua care pure aquarium balls, fish are fine all chemical levels se ok fish aren't overfed. Tank has a slight brown tinge from the wood tanins but it won't completely clear,should I just leave it and let nature take its course?