What you described is not a symptom of pH "burn", unless you examined the root ball and found the tiny roots and roothairs "singed".It was a bad batch of their mix plain and simple. I didn't nute the youngin's at all prior to experiencing the ph burn. Since transplanting into 5 gallon containers of ocean forest, the plants have rebounded and are no longer showing signs of ph burn. Thanks for the info though.
Good luck,1. Over-fertilizing - the most common cause of leaf cupping aka leaf margin rolling, leaf margin burn, and leaf tip curl/burn is the overzealous use of too much plant food in relationship to factors such as plant size, vigor and rate of growth. The first unit of a plant to show moisture stress is the leaf at its margins and/or tips, reflected by margin rolling (cupping) or burning. Sometimes copper colored necrotic spots show in the leaf also. A hard, crispy feel to the leaf frequently occurs as well, as opposed to a soft and cool feel of a happy leaf.
I normally don't care for name calling but you should stop acting like a douche bag. If you think I'm a liar then simply don't post a response and move on with your life. I said I used no nutes and since I have no reason to lie to people on a forum that I don't know, you just might as well let this one rest.What you described is not a symptom of pH "burn", unless you examined the root ball and found the tiny roots and roothairs "singed".
pH burn results in an imbalance of element uptake and like I said, based on your symptoms, the "crispy leaves and brown spots" is a classic symptom of salts burn. Fess up, what plant foods were you using, at what rate, and at what frequency? Not trying to put you on the spot, just trying to help YOU understand what you did so you can avoid this issue with another garden.
As stated in my sig link:
Good luck,
UB
Yeah, I noticed you have to add slot of perlite to promix for proper airation. Is there really enough food in the soil for three months of feeding? The rep told me any food in the soil is usually flushed out after a couple of waterings. I'll stick with Number four, where I have complete control without having to add perlite and guess the food levels in the existing medium.I worked for a large "garden store" operation in my state and pro-mix was used for everything successfully for over 30 years. I've personally been using it since 1988. Coco may be better, may be easier, and maybe more expensive too for large operations.....but pro-mix is readily available almost everywhere in the east and after adding enough lime and perlite, is trouble free for 3-4 months if you don't over fertilize and flush if necessary. I use enzymes and Great White too with very good success.