No co2, low light tank. I've never cleaned the glass! Lol... Ok maybe once.
I dose 1-2 drops of PPSpro daily but sometimes I forget for like a week or so.
I change one or two gallons of water like every 4 months.
"inert" substrate akadama drl.
I tested for everything the first couple of months until I realized the tank metabolism. Then I have tested only when something seemed wrong or out of curiosity or I was bored.
One thing tho, I don't keep fish any more because they are too much mess. Only shrimp, they are constantly manicuring the plants and I have to feed them very little.
Filtration is a planted HOB and an eheim 2213 canister running a DIY UGF.
I hope this info is useful because I had a cramp on my thumb! Lol!
My point is, figuring how to have a tank running with the least input and maintenance is achieved by observing and measuring. Once you figure it out, then you can adjust to the minimum requirements.
Trying to force a tank to be low maintenance having a lot of feeding going on is kind of frustrating.
I would be measuring your weekly build up of no3 and po4 to know how much the plants eat vs how much the fish waste gives them. Then you can regulate your growth (to consume the waste) by adjusting co2 and light to keep a stable water quality and diminish the water changes thus diminishing the parameters swing.
Less fish, less light, less work.