Root tabs which do you use?
Not sure if this is the right place but figured it would be ideal here being they are buried in the substrate.
I use 2 different types. I use the Flourish Root Tabs under my Erios as they have alot of stuff in them and make the substrate slightly acidic and I use the API ones through out the tank. The API ones have no copper and not much of anything but NPK. They do have to be replaced monthly where as the Flourish ones are designed to be replaced every 2-3 months or so before they break down. I do use an Inert substrate in this tank also. Been considering going to a soil base covered in Turface but not sure I want to stress the Erios' any more by moving them again.