Some of you may have seen my discussion of fertilizer testing on TPT. I am currently attempting to develop a substrate fertilizer. Primarily I am working on a delivery that seems to be similar to the FERKA capsules. I am not sure if anyone has experience with them here.
I have tried, and adjusted them 7 times now, and am ready to start with some more significant quantitative testing. This is why I have come to you fine folks.
I want to use plant tissue testing and biomass weighing to test this, as Tom has suggested. I will quote him for good measure:
My first questions:
What plants/cuttings should I use in my preliminary testing. What method of growing would you recommend? How many? I will use separate containers for each, have not decided on which yet.
Because I have little interest in making money off of this I will explain. The fertilizer is placed into the substrate using a gel capsule(I am testing vegetable caps right now too, for solubility, but they are more expensive) just like FERKA caps. I am trying to make this a comprehensive fert, but am open to suggestions for what to use.
I am open to any thoughts and suggestions. This is more an attempt to offer a really cheap, yet effective fertilizer that is superior to the common ones out there. I know there are many DIY options, but this is intended to be cheap enough for those who do not want to take the time( I know that is not most of the people here) to DIY a solution for themselves.
I intend to use a lab for some of the testing, but for a more economical testing could one of these tests work http://www.biconet.com/testing/pt.html or one of these http://www.google.com/products?rlz=1...ed=0CBwQrQQwAg
Thoughts, concerns, criticisms, etc are appreciated.