substrate dying plants problems

  1. Cat

    Could it be the substrate? Tank in terminal decline...

    Hello, I wasn't sure where to put this post but seeing as we have changed just about everything else in the tank the substrate is the only thing left? We set up the tank in 2014, it is a large tank at 450 litres, we filled it with ADA Amazonia soil, power sand and this stuff that was made up...
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