Emilya Green
Well-Known Member
I definitely see it in those last pictures, and it only reinforces my above about it being an iron deficiency and your explanation confirmed the diagnosis. Pickling lime from the grocery store makes a very powerful pH up... just add it to warm water and shake the heck out of it until it dissolves. Don't store it in a plastic container... glass is necessary to hold it. PH down is just as easy... get a $6 container of battery acid from your local parts store, and replace one cup of distilled water out of a gallon with 1 cup of the acid. The dilution you end up with 1:15 is just about the same strength as the popular pH down product you can buy, at 1/100th the price.