I looked into it and my plan is to use liquid ferts only. Make my own NPK strength concussion and use accordingly. Another way is to use 100% water soluble fert, and premix worth water using mortar mixer, then strain the mix into the tank. Those using it have good reviews. On drips, it is very hard to fertilize in CA due to drought weather. I will have my system up and running in 3 weeks. Will report results in 6 weeks. Having over 500 fruit trees, plants, shrubs on drips is hard to fertilize.