Hi. Jumping in here because of the Subject title.
I was wondering if you can buy and all-in-one.
I have long term, fairly well balanced planted tank but I add nothing at all. Looking to ramp up the colors and growth, so thinking both ferts and maybe even CO2. Still wanna keep it easy, and looking at these notes, it looks like you need to be a chemist! I know I need to get a test kit (yep, haven't tested a thing in years).
Hey, I'll take on help on any of this please and thanks!!