Best to assess how many people would be interested. a sample of macros for $3 and a sample of Micros for $3 might suit a majority of people. Going by a drop a gallon will likely last several months. Would this be fair to everyone? remember we're going to start slow with the PPS Pro
method targeting smaller tanks but it may be applied to larger tanks equally in larger doses.
I'm not familiar with PPS Pro dosing nor do I do liquid dosing. Albert, if you could tell me the formula of ferts to water, I can buy the bottles and make everything and just bring it out all finished.