Anyone Tell Me What This Is??? Please Help :/

Weird Its Only On one Of The Plants They Were Perfectly Fine Yesterday i have been bringing a couple lady bugs in the tent do u think these could be lady bug eggs i thought they were yellow not white??? just dont want this to be something that can cause a problem anyone else get this???

Its On The Bottom Leaf In The Picture Its Like A Cluster Of White Balls Or Something But No Sign Of Spider Mites Or Anything Possibly Mold Or Maybe Some Left Over Nutrients From Watering On the Leaves????

looks like a type of egg :O
I would try poking at it with a razor blade
and see if they roll off.

It Ended Up Being Nutrients From The Big Bloom Fox Farm! Must Of Gotten Ontop Of It When I was Watering It Was Like A Bunch Of Sand... Plants Are Healthy, NO Bugs ( Other Than Lady Bugs), And Will Be More Careful next Time To not get it on the leaf. Im lucky it didnt burn!