290G Peninsula Tank

[lastlight]

these carbon blocks normally treated tap water. is there any data that shows how well a block like that performs in reducing organics from an aquarium vs say rox 0.8 ?

Carbon drives me nuts as well. Now all I do is pour a small amount into both of my mesh filter socks. That way I can easily rinse the new carbon by pouring clean water thru the sock then add to sump. each week when i clean my socks i just dump the carbon out. It's been so easy.