Originally Posted by coldmantis
You need a drop checker with a 4dkh solution. I don't know how big your tank is and how you diffuse it but let me give you a point of reference on my 5.5 gallon with a hob filter that makes a lot of waves, using a regular glass diffuser. Im doing 3bs and I get barely get lime green on my drop checker which brings it to around 30ppm. PM me if you need drop checker and 4dkh solution.
I use a glass atomizer diffuser in a 29g tank. I pmd you about the drop checker/solution. Thanks for the advice