Sunburned? Windburned? Did you put them outside without hardening them off?

Well, if so, bring them back in and let them recuperate. Then set them outside in the shade for a couple of days and only gradually move them into the sunlight for longer periods of time each day. This should take about a week. You plants can recover if that's what the problem is.

Sorry, can't see what your talking about. Think it's possible you can make those pics a little bigger?

Bigger? I'm surprised they loaded given the limit here on size! ;)

Excess N fertilizer can sometimes cause leaf edge and tip burn. Can't see them well enough to know that is what it is for sure but how much and how often have you been feeding them?

dave

Thats the thing I haven't really put them outside much certainly not long enough to cause damage, there was only a tiny bit of seedling fertilizer added a long time ago.

The wilted leaf tips & edges indicate a root problem of some sort.
You decide which of these, or which combo, might be the case or may have contributed to the drying:

1. Letting the potting mix go dry, even though briefly.
2. Adding fertilizer when the potting mix was dry. (The mix must always be damp to moist when fertilizing. If not, root tips are burned (damaged) by the fert.
3. Outdoors in more harsh conditions that they can tolerate. This includes breezy times during which the roots can't keep up with the water demands of the top.
4. Episode of higher than normal temps, even though relatively brief.

I suspect the plant had a prolonged period between watering. Cellular damaged was caused when it suffered a dry spell and then a sudden deluge of water. It's the sudden surge of water that causes the cells to explode.