Discoloured, holy leaves?

Hey guys,

Was wondering if I could pick the brains of the growers on here, it's my first grow and the ladies are 3x feminised Chronic Haze. I noticed two small holes in the lowest leaf one one plant a couple of days ago but just assumed it was light burn from foliar feeding, but I got up today and the leaf is beginning to discolour, kinda going pale green all over but with a bit of browning. In fact the whole plant seems paler than it should be. The other 2 girls seem ok.

The set up:

2 x 125w cfl (1 6500 and 1 2700)
Biobizz Lightmix
Biobizz Grow and Bloom
water ph between 6 and 7
watering when the top 2 inches are dry

I'm a wee bit ahead of the nutrient schedule from biobizz so all 3 have been getting a dose of nutes for about 4 days (2ml/l). Oh yeah, they're 9 days since breaking soil and the biggest is maybe 9 cms in diameter.

I'll work on getting some pics up but any advice in the short term would be fantastic! Really want to nip this in the 'bud' because I've got high hopes for this lot!

You can't nute burn holes in your plants. Your holes are very likely caused by something entirely unrelated to the foliar feeding. Potentially insects.

OK, thanks for looking in mate. Was sure I'd seen it mentioned on these boards, nevermind! I should mention the holes are brown around the edges - my thinking being insects would leave holes that didn't look burnt...

Thanks again, I'll crack out a magnifying glass and see what I can see.