Hi Jayc, The parameters are fairly broad:
Temperature between 22-27c
nitrate under 20ppm
general hardness 100-300ppm
Personally I am a minimalistic fish keeper, I don't have any idea of my own tanks parameters.
I have been practicing this min approach for around 20 years now and find that the least i play with the tanks the less trouble I get ,so I only do evaporation top ups, Temperatures are usually around 27c, I only change or clean filters when they stop working, I keep plenty of plants in the tanks and have real good surface flow, I also have native shrimp ( local caught) as a clean up crew and some nitrate snails .
I have found that Endlers are a fairly hardy bunch and get along fine if you leave them to it