Holes and yellow spots (pics attached)

Prob similar to other posts, Its my second try at growing, and Ive got some holes and yellow spots..

Veg growth: 0 days
Flowering: 4weeks to this point
Soil: Biobizz All Mix 5lt per pot
watering: about 750ml every 3 days with some misting each morning
Lite: 600w 50cm above canopy
Nutrents: none yet, seems to be enough or too much in soil
Vent : good extractor
Ph: just about 7

Have ye guys got any ideas?

had the same problem try flushing

growman3666 said:

had the same problem try flushing

Click to expand...

DOH!! anything but that I cant lug that much water into my secret place

Toxic salt buildup, you reckon? But if PH and Nutrents are ok then how can it happen?

I guess these things just do....

If you're growing in soil you do not want to water everyday, let the soil dry out and then water until a little bit comes out of bottom of pot. I would also lower your ph to 6.5. Flush with flushing agent or 6.0 - 6.5 ph balanced water. To avoid this in the future use hydroguard water treatment along with your food. You have to flush last week or two before harvest or your buds will taste like crap.

Cheers guys, Ill give that a go, sadly I dont think that product 'hydroguard' exists here, but im sure to find something

It's made by botanicare, if there is any garden shops by you they should have it. Otherwise you can get anything off ebay.