Hey guys, I just bought an Aqua Clear 50 Powerfilter for my 28 gallon bowfront tank. And I was wondering (since I like clear/clean water) is it true that activated carbon that comes with this filter removes plant nutrients from the water? I dose with dry ferts I purchased from Aquariumfertilizers.com aswell as Flourish Excel. I have seachem black sand substrate and a 55w light kit I purchased from AH supply. Would it be okay to have carbon in the filter? Thanks.