I am having watering problems. I always under water my plants. I think it's a fear of over watering. I ordered some classic blue mats to try with my 6 current autos. They have about 4-6 weeks left and I've under watered again and it causes other problems like nutrient lock out due to dry pockets in the pot. I'm just wondering if anyone else uses these for their smaller auto grows and how it has worked for them?