haggendas wrote:I started off by using DAP then found it more economically to use garden fertilizer (Scotts Miracle Gro 20-20-20 general purpose fertilizer) since I can't find DAP near my area. The closest DAP source is ordering via internet and waiting days to get it. With garden fertilizer I zip down to the grocery store as needed and purchase some. I got this from a different forum and tried it. Works great! I ferment 50 gals. with about 105 lbs. sugar for a sugar wash and use ~13 spoonfools of the measuring spoon that comes with it with good results.
HD
croweater wrote:Yep my comment pertains to "garden fertilizer" more than DAP as the link I provided discusses mainly the dangers of combining ethanol and urea , something you turbo yeast users might want to look into ;-)
BCarter wrote:DAP will boost nitrogen better than TPW will. That's a chemical fact, or wineries around would be adding tomato paste left, right and centre. This is due to the ease of DAP to be assimilated by yeast cells, as opposed to relying on enzymes to break down nitrogen present in the tomato paste into more inorganic forms. ... Tomato paste however has the addition of micronutrients which will also aid in the positive growth of yeast and hence, fermentation.
nb0s wrote:BCarter wrote:DAP will boost nitrogen better than TPW will. That's a chemical fact, or wineries around would be adding tomato paste left, right and centre. This is due to the ease of DAP to be assimilated by yeast cells, as opposed to relying on enzymes to break down nitrogen present in the tomato paste into more inorganic forms. ... Tomato paste however has the addition of micronutrients which will also aid in the positive growth of yeast and hence, fermentation.
Your post is quite correct. However there is a world of difference between the distilling world and the wine world. I mean who wants to drink a pink wine? :D This is a distillers forum and a TPW is always going to be distilled. Best practice might suggest the addition of DAP mid ferment but the KISS principle asks. "Is it really necessary?" TPWs that aim for only 10-11% ABV leave the yeast in such good shape and numbers that successive ferments may be done on the lees of these low ABV washes without the addition of more yeast.
BCarter wrote:DAP is incredibly useful for distilling to avoid volatile H2S [Hydrogen sulphide / 'rotten egg gas'] and acetaldehyde which greatly decreases the quality of distillation. It is completely necessary to avoid these aromas that occur due to a struggling ferment, no matter what the end alcohol is.
BCarter wrote:If you are trying to achieve a clean ferment without the presence of H2S or acetaldehyde (which is detrimental to distillation quality), then you will require DAP mid-ferment...
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