where is the form and what would i need to be filling out the form for? i thought i could just post a question and have people answer it, that's the way it use to be

I use regular water about a 16oz water bottle every day or every other day depending on how dry the soil is, i have a 400W HPS bulb for the light, i have not added any nutes as far as mirical grow or store bought things, I have added some Seltzer for CO2 once in a while followed by water. I have used a technique that was told to me on here at one time of drying banana skinns in the over slowly and then grinding them up and placing them into water for the Potassium to be extracted, i added about 8oz to the soil followed by 8oz of water to help flush it through. One plant had died on me out of two, i cut the dead one out from the base of the stem, if i pulled it i thought that it might damage the other roots of the healthy plant. Can someone please help, if you need further explaination on something please ask.