Clones rooting

I have some clones rooting and just noticed yellow webs on the leafs some have it bad and others just getting it they are 5 days old i have a dome on them room temp 75 85 any help are they some kind of mite and what can i do to stop it

Can you get any pics?Webs sounds like spider mites?But pics would be better to identify the cause.

Ok let me try to get some pics thanks

another thing you might want to check out is mold or mildew. If they are in a dome it might be too moist inside, causing it to grow. If you can't get a picture, get a magnifying glass and inspect underneath the leaf. If you see the mites or their eggs, treat for that. If you can't find anything, you might want to take the dome off for a few days, just make sure the plugs the clones are in don't dry out. Good luck.