ways to increase the nitrogen ?

all my plants are doing well..third week of flowering but two of them half the plant is yellow like its deprived of nitrogen..the ph is 5.8 so there shouldnt be lockout..should i flush the plants? there in 6 inch rockwool blocks about 2.5 feet tall

house and garden nutes 1000ppm in ro water with 5ml per gallon of calmag in a 25 gallon resavoir..just changed res 3 days ago...problem has been there the past week

What's the NPK on your nutes?

It seems like if you gave 'em different nutes with a higher N ratio you'd be golden. Now you're right in the middle of the stretch so they need lots of nitrogen; they're going through their growth spurt.

Aqua Flakes A NPK: 8-0-0
Aqua Flakes B NPK: 2-4-10
cal mag 2-0-0

thats what i have going right now,can u suggest anything to add? thanks

i agree ur plants need nitrogen, they are stretchingthey need a good dose of all three major nutes during the first few weeks of flowering

how often u feeding them

twice daily for 15 minutes.. should i up it to 3 times? once at 930 am once at 730pm

Use Blood Meal. Miracle Grow Organic Blood Meal 12-0-0

noxiously said:

Use Blood Meal. Miracle Grow Organic Blood Meal 12-0-0

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im doing hydro, anything else you can recommend?