North Thunderfuck Auto - by RQS

The reason for these deficiencies are the waste nutrient salts build up inside your soil. You need to do a small flush to flush these waste salts away. Use the pot volume in water with pH 6.2 and a low EC 1.0 When you have done this just let the soil dry till the top inch layer is completely dry before watering again. Then you can continue feeding like you did before but this time water (feed) till 10% from the given nutrient solution runs off from the bottom of the pot to prevent the waste salts building up inside the soil again. Happy growing buddy!