nutrient feeding

Hi people Wow this place is ace I'm learning good stuff on here. my name is dave Im still learning so please advise would be very much appreciated I'm now on my 3 grow first two didn't turn out so good but I am not giving up. I was using vitalink range for my first 2 i have now switch to fox...

Ok hi so this is my first grow, I'll start with the facts of my set up before diving into my problem and providing pics. I've got an 8' x 4' × 6.5' tent. Running a recirculating deep water culture, 30 total gallons, 6 sites 5 gallon buckets. Running 8 airstones (1 per 2 for reservoir), a 550...