First time grower-aerospring nutrient troubles

Hey everyone this is my first time growing and I am using the following setup:
400W HPS
Aerospring aeroponic system from HowToHydroponics book
Liquid Earth Nutrients-currently at mild strength of 1 tsp./gallon of grow and vigor

Alright this is my first crack at growing some sweet dank and I am currently growing Northern Lights x Master Kush which I ordered from Amsterdam. Everything was going great until I upped my nutes to full strength about a week ago ( 2 tsp Grow/gallon and 4 tsp of Vigor/gallon), which was reading about 1000 ppm. Over the weekend I noticed that some of the bottom leaves on the plants were developing browny/yellow splotches and getting crispy while the top leaves are still lush and beautiful. I actually changed the water 4 days ago and let it run with only water for 24 hours, then added superthrive and let it run for 24 hours. Since then I am using the mild strength solution as noted on the bottle and have added 1 tsp/gallon of B. Seaweed ( res. now reads 500-600 ppm). I am not sure that this is going to solve the problem though as I have not seen nutrient burn before and am not absolutely sure that this is the problem. If anyone could please help me by taking a look at these pics it would be awesome.

Looks like a mag deficency. Mist with 1/4 tsp per gal Epsom Salts or water with 2 tsps per gal. Use the stuff from the hydro store not from under the cabinet. I flush with Florakleen, it works a lot faster then water and I add CalMag to my nutes at about 3-4 weeks into veg to help prevent the problem. I never go full strenght with my nutes till the end of flower, 1/4 to 1/2 strenght is good with quality nutes. Overdosing with some nutes causes deficencys of other nutes! Good Luck!

Thanks a lot Bubba I'll try that!

Alright I finally made it to worms today and got some florakleen and some magical. I just added 2 tsp/gal of magical to my reservoir as indicated on the label to overcome deficiencies. I just tested my nutrient concentration and it climbed all the way up to 1100 ppm using a .5 factor. Should I be worried about lockout or burn? I picked up the florakleen so that I can flush them again if needed. This is actually week 3 of my grow and they seem to be bushing up quite nicely! Take a look at these new pics.