Meter recommendations - light, moisture, ph, etc

https://lemmy.world/post/3385989

Are you experiencing any problems with your plants? How are you caring for them at the moment? What would you like to achieve? I’m just asking because I feel like this would be helpful to know to give you appropriate recommendations.
Many never seem to develop strong and substantial root systems no matter how properly I water them or how much I amend the soil for what they specifically need. I have an alocacia zebrina that has only grown about 5 leaves the whole time I’ve had it (about a year) and I’ve read that it’s a fast growing plant once it has enough light and soil. I guess I wanna be more confident about whether the light situation I’ve set up is enough, and I want to feel more confident that my plants are thirsty before I water again. My concern is whether these meters actually work or if they are a gimmick.