These were a new addition to my collection of tools. While I love gardening in pots and containers both inside and outside, I’ve always found difficulty with watering the right amount. These aquameters live in the pot with your plant and when the soil dries out, the meter changes from blue to white. Super simple. If I have multiple plants in similar pots in the same location, I’ll put one of these meters in one pot and assume the soil moisture is roughly the same in the others.