Hi Mate,
There are two possibilities that could be causing your burning, in my experiences your lights may be too low to the plants at this stage with the power of 1000w it should be around 33" - 40" with early vegetative stage of the grow cycle or it could be that you are using BLOOM rather than GROW at this stage?
Oh, yes nearly forgot you need to PH down to 5.8 - 6. You are running to lean in car terms and you need to reduce the PH levels as our friend has quit rightly pointed out to get better more performance and efficiency.
BLOOM is more powerful and should be used during the flowering stage of the grow cycle.
Not telling you how to grow, just some friendly advice to consider. Let me know how you get on.
Good luck buddy👍
@Whazza, I appreciate that, I'm new and the guys at the store told me since I'm doing autos I should only need the bloom.
Keep calm smoke the bomb and grow on!
Forgot to mention i am growing my Pineapple Express Auto by Barney's Farm and i am in week 4 and i am keeping a weekly diary if you want to follow. Plenty of useful information to mirror with your grow as you are 2 weeks behind me?
Whazza