Tried many things first, its been 4 weeks and no more growth.

Hi,

My first grow!

Its been 4 weeks now since I first noticed my leaves turning yellow, and now my plants refuse to grow.

The photos show how they are today, but they looked almost identical 4 weeks ago.

I have tried different things since the first day, starting with different heights of the led light. I have two sizes and tried both. I tested the led with a watt meter and they are to spec.

I only have a dripper ph tester, I follow the instructions and hope it is accurate enough to keep the pH within 5.5-6.5pH.

Its a DWC grow. Indoor grow tent. Continuous carbon filtered exhaust. Air conditioning inlet. Humidity always 40-55%, temp always 24-28C - I have several meters around the tent to compare.

I am using Nutrifield Elements GROW A & B. I started with half the recommended dosage, now using full dosage. All measurements checked and double checked!

Looking at the bottom leaves my research says I need calmag, but my water is straight from Capital City tap water and the nutrients say there is magnesium in there already so I am worried getting calmag will do damage.

Any comment would be appreciated!

They are burned and most likely the roots are toast i would start over.

Can you tell me how that happened?

You most likely used nutes to soon. The seed will provide all the required nutrition until you see a full set of leaves. Then slowly start to introduce nutes.

I waited and I used half strength first.