Anyone know why my plants leaves have spots on them?

I have four Sorrano Pepper plants that I have grown from seed about a month and a half ago. They are being grown indoors. They all were started at the same time, one is noticeably taller than the others at 30cm height and has healthy looking leaves. Two of the plants have noticeably spotty leaves. The picture shows the appearance of one of the plants leaves with the most spotty appearance. Is this okay for my plants leaves to look like this, or is there something wrong with them?

 

Spots are not good, but not always deadly. Isolate the ones with spots from those without.
Are the spots small bumps or more like holes? Are the spots on the bottoms of the leaves?
good Serrano info:
http://www.backyardgardener.com/plantname/pda_7fe1.html

Peace,
poor_old_dad

 

the spots are not like holes but seem to form tiny bumps on the back of the leaves. One of the plants had the leaves shrivel up except for the two bottom leaves. I think that plant is not gonna make it but one of them is much taller than the rest, and doesn't seem to be affected by the spots. They are tiny though, and I don't have a magnifying glass to look at them closely.

 

probably cause you feed them some RC plant food..

 

you got mites.. get a magnifying glass and youll see them.

 

It looks like a calcium/magnesium deficency to me. It could also be pest related such as spider mites. Do you have a loop you can inspect under the leaves with?

 

I think it is spider mites! Do spider mites weave webs? Upon looking closely at the bottom of the leaves, you can see tiny webs, like spider webs that connect from the bottom of the leaf to the stem. It's very hard to see and probably wouldn't show up in a picture since it's only visible when the light hits it just the right way. The only way I really noticed it was there was like a tiny peice of dirt or dust or something stuck to one of the webs, so I saw that, and then saw what it was connected to. I can't actually see any "spider mites" but I can see the webs they've made.

I hope there's a way to kill these fuckers.

 

they dont call em spiders for nothing..

 

Yep, you got mites bad! Get them gone or the plant will suffer badly. Mighty Wash is awesome an safe. PM2 by Jungle Juice, Green Cure, etc.

 

Wash the leaves with a damp cloth, then spray with a sprayer in a kitchen sink. There are several insecticidal soaps.

One thing to keep in mind, most measures will not kill any eggs, so pay close attention for 2 or 3 weeks. Here is more info:

http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7405.html

http://cru.cahe.wsu.edu/cepublications/eb1750/eb1750.html

Peace,
poor_old_dad

 

Looks like they have spotty leaf