There isn't a universal agreement on when to start counting "weeks".

Some people start counting when they plant the seed/cut the clone. Some start when they sprout. Some start with the first set of true leaves or at a certain number of nodes.

The chart says to do 1ml/L for seedlings and clones, 2ml/L for small plants, and 4ml/L for mature plants so adjust accordingly.

That's a minor burn IMO. If it were me I'd drop to probably 3ml/L, 2 if I wanted to play it extra safe. Your plants are good sized, they're not really small.
killerm8r Reviewed by killerm8r on . Advanced Nutrients Calculator: is it right?..oh my poor seedling..i need expert I'm a beginner hydroponic cultivator. My biggest problem was and is the nutrients. I try to calculate the necessary quantity of sensi grow with this Advanced Nutrients Calculator, Hydroponic Nutrient Solution, pH Perfect Nutrient Calculator i set: 6 week, 10 liters, metric. It output is 40ml A + 40ml B, PPM: 1040 , EC: 2.08: isn't it too much for my 3,5 weeks old ladies? I'm confused. Is there an expert that can help me please? P.S. 5 - 6 days ago the new leaves came out with white - clear Rating: 5