No just different formula, as I said the last one was a little rich for my set up now this one is a little lean but either way it makes a good starting point. A lot of work for no pay on Pat's part in my opinion and very nice of him. Given all the variables I doubt one can be made that would be 100% for all set ups and locations all at the same time. You would have to take temp,humidity,elevation,and all mods into account to get it perfect and even then there would probably be small differences.


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