You might find EI dosing to your liking and it's relatively safety due to frequent water changes.
You reset the tank each week basically and nothing ever builds up, it's simple and effective.
Over time, you might back off the dosing, watch the plants and see if you can reduce the water changes if that gets old.
Or use test kits and calibrate them and see.
But most get curious after awhile and try things out, often causing them selves more hassle, but some feel otherwise and think water changes are horrible.
Water changes are fast and easy if you make them that way, I use a simple hose attached to the shower head, that fills the tank, the same hose also drains the tank to 50% etc, takes a few minutes, while I clean and trim. By the time the tank is refilled and drained, I'm done with everything, typically 25 minutes for a 180 Gal tank.
I just make a U shape PVC to hang on the tank, water goes out on the lawn/house plants, so I do not water my lawn.
Simple and fast.
I have a automated water changes and semi automated water changers for client's tanks, I turn a valve, the tank drains, I turn another, it fills.
It's all hard plumbed, some use float valves in their sumps and the water drains and fills automatically.
For all the crying moaning folks do over water changes, seems like a simple long term solution is best. Make it easier to do, then it's not an issue. You cannot automate test kits.
Some like to test, they do not have my job or line of work where I do it all the time however. They still think it's fun and "Science", yea, right.........
You basically set a ppm level you want for each nutrient, then dose based on what is removed over time. Then test to check and keep it there, dosing what is needed to keep with in that range of ppm's you want.
You also need to calibrate the test kits with a set of reference solutions, which you also need to learn how to make. If you have been around and are familiar with test kits, and like that sort of thing, then this works well also, the trade off here is fewer water changes but more testing and managing nutrients.
Neither method is better than the other, it's just a labor and technical trade off. For most hobbyists, a water change is a simple no tech no brainer method, testing, ppm;s reference solutions, chem, scares most. Some use the plants and algae to address issues also, but this takes experience.
I use all three methods here and there.
Depends on what is required for the question and the trade off.
Many malign the other methods because they have had success at one of them but they all work and the individual tanks and goals that folks have require a human factor to help correct and tweak things, no one method will do it all for all issues. A real person helping you is better than the best written method. People are part of this, not just methods or aquariums.
Dosing is rather easy overall, a very strong focus on CO2 and having moderate to low light is helpful.
Most old timers stick with nice plants, lower light, good CO2 and good routines that are straight forward and easy.
Regards,
Tom Barr