I regularly use ProTekt as a fertilizer additive. However, I use it as a pH adjuster for my paphs....I add it to my fertilizer to bring it up to a pH of about 6.7 or so....Since I am now using the MSU formula (First Ray's version, lower in phosphate) I add 1/4 tsp to a gallon when I add a tspn of MSU. (I used more ProTekt when I used Dynagro, because it was more acidic.) Does it strengthen my orchids and prevent disease? inhibit sucking insects? A resounding NO! But it is a simple and economical (on my scale) method of keeping my paph's fertiliser from being too acidic (other orchids get straight MSU). Take care, Eric Muehlbauer in silent, snowbound Queens NY....23" by 10:30....lots more for my 2nd round of shovelling in the afternoon.....2nd greatest snowfall in NYC history...
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