The hydroponics is not a closed system, so I don’t have to do any testing. I have about a 30 gallon reservoir that I fill about once a week from my rain water capture. Nutrients I keep pre-mixed in two 5 gallon buckets. I add about 3 cups of each of the nutrients when I fill the reservoir.
I’m playing with aquaponics in an aquarium, but I need more fish. The ammonia levels have never gotten high enough to measure.
The bananas just get like a 10-10-10 once a month. I have no idea what they actually need. Oh, and a good bit of compost.
Great info. Thank you!