nitrogen deficiency and chemical burn!?!?!

Hey guys I have a quixk question, on my older leaves ive been gettong yellowing in the tips then it continues to the whole leave.... I tested my soil it said i was low on nitrogen ive been feeding 2.5 tsp grow big and 2 tbs big bloom with 1 tsp or 5 ml cal mag to correct a.calcium def. I had.... This week i boosted my grow big to 3 tsp wnd left everything else the same ive been feeding her on 2.5 for a couple weeks, but my question is now on some newer leaves im getting yellowing on the sides? Is this nute burn? And can i have nute burn and nitrogen def.? Reason tips of leaves were cut on some was.because i had mildew problems bexause my humidifier got to high for a.couple days i was gone, but that is corrected now. Also in the lower leaves it seems to me anyways that some of the green color is coming back.
Room temp: 75 degrees F
Strain: ramulen bag seed
Soil: jiffy seed bag mix with 30 Percent perlite added
Thanks!

And this Is my second plant im pretty sure shes nutrient burn, correct? Any replies would be much appreciated, i looked every thing up online and on rollitup just wanting to double check

I'm assuming your plants are in the flowering stage. Did you flush your plants before adding your flowering nuts? Another thing to do is just water your plants with 6.0 pH. See how that goes for a week. Here's a chart on nutrient deficiencies. Also check your pH level in the soil.

can i ask how you tested the soil to find out its n dif ??

wont a ph of 6.0 be low on p ca and mg id go closer to 6.5 get the full range of nute uptake

They most likely used a nutrient soil tester. It's sold in the Home Depot's gardening section. At least that's where I bought mines.

As long as the pH range is between 6.0-7.0 its ok. I say 6.0 because I'm following a grow schedule that requires that level. The grow schedule was made by a cultivator in the Netherlands where I get my seeds from. So let me correct myself. Baker 12356, water your plants at the pH level that you are using without nutrients for a week.