clones keep burning

At a certain point after I clone, whether they're rooted or not (typically around half or more are rooted), sometimes after transplanting, i get a strange burn. sometimes it starts at the middle blade, halfway down, on the sides. Often its on the tips. It happens to every clone, no matter the strain. I always clone in grodan, and want to try something else. I also use rootech gel. Im attaching a picture.

what are you transplanting into?

start by flushing with water for 2 days then drop ec levels to minimum levels.i use cubes 1 inch to start them off using just water, once they are walking then in the 3inch they go still using water untill they are walking again. then start nutes starting low building up as they get used to it. hope this helps

I never use nutes on rooted cuttings, pure RO water. Typically ocean forest, but this time i tries roots organic 707, same deal.
exodus mission, do yours end up in soil or hydro? I thought the bigger cubes were for hydro, I didn't see any point to putting 3in cubes in soil. I've never heard of anyone doing that either, but i could be mistaken. Also i'm not sure what EC levels are exactly, but RO water should be 0, right?

Try root it cube's far better than rock wool cube's the cubes are made out of a sponge material and soak them in plant start all though this is no nessessary but it does not hurt.Then only mist with water nothing else ph the water at around 5.0 keep them in a humidity dome for the first 5/7 days but after about 3 days keep any vent's open closed before this time.Then just give the clone's a little time to do there thing also i think that over misting can do more problem's than good once in a morning and once at night for the first week then after this roots or not only mist once make the clone's work for the water this will give you a far better clone................tyke.........................