Small Holes / Incomplete growth?

I am growing 8 WW seeds from Nirvana.

It's my first grow so I'm experimenting with methods. I have 6 of them in 1 1/2 gallon pots which are 3:1 mixture of Pearlite:Vermiculite. I treat this like a type of Hempy Bucket. I use Ionic Grow 3-1-5 in combination with fish emulsion 5-1-1 to feed these 6 plants. I am using full strength on them now. They get fed on tuesday and watered on saturday. They are doing well and I really am surprised I've had no bigger problems up until now.

They are growing in a grow tent under a 400W MH lamp on standard 18/6 light settings.

On two of my plants, I'm seeing holes in a couple leaves and two or three leaves that look like they just stopped growing or someone cut their ends off. The end of these blades are pretty abrupt in their ending. There is no discoloration or browning on the edges. I cannot find any indication of mites or bugs of any kind on these plants. The pictures are below. I have added the front and back side pic of one of the holes and then a pic of the leaf that looks chopped off.

I've searched these forums and might not be using the search feature to the best of it's capability but cannot find anything regarding this type of leaf problem.

Does anyone have any insight as to these leaf pictures?

Thanks.

looks like sumthings munchen on your plant when your not around. doesnt look bad though

You're right that's exactly what it looks like. lol. Wish I could figure out what it was that's doing it. No trace evidence of spider mites and no other critters in the tent that I can find. Out of 8 plants I probably have a couple hundred leaves in there and there's only 10 or 15 effected like this so I'm not panicking. But I'd like to get it resolved sooner rather than later.

First and second one looks like maby a drop of something hit the leaf? (Looks like same leaf just diff sides?)
third one.. Dunno..
I wouldn't be all worried, but i would be paying attention tho

I wouldn't worry too much about it. The hole looks like physical damage, accidental maybe, the leaf ends look like what I would see if I fimmed or if a box elder bug chewed a baby leaf end.

my cat likes to munch on mine like its catnip..... do u own a cat?

looks like bugs