What am I doing wrong?

[Cat]

So, this is my 4th grow. The other three I had great success, but the start of this grow doesn't seem to be going too well and I feel the plants/seedlings are very slow growing. I've attached a few pics with labels next to the plant and number of days growth. I've attached two photos for each plant

I use coco/perlite. The only difference in past and current grows are the nutrients and, initially, the lights. In previous grows I've used General Hydroponics Flora Grow, Micro & Bloom with Plant Magic calmag.

However, for this grow I've been using Plant Magic Grow A & B for hard water, with calmag. I've only just increased the nutrient strength (per gallon of water) are 1.5ml Grow A & 1.5ml Grow B & 1.5ml calmag. The EC is between 0.7-0.8. Ph 5.8.

My new LED lights are 2 x marshydro SP-150, but I changed back to my original lights yesterday, which are 2 x marshydro 300w.

I'm wondering if maybe I'm not using enough nutrients and if the EC should be slightly higher? Maybe some people might have an opinion on the type of nutrients I'm currently using and if these might be an issue? I'd be very grateful for any suggestions, thanks

 

[Jackson]

No expert here but soil grow need a higher PH. I mix nutes in distilled water and then shoot for PH of 6.0 to 6.5

 

[MesaBoogie]

he is in coco not soil.. The plants look about the right size to me.. I would put your newer lights back up.

 

[Geordiejesus]

How much have you been watering?

 

[Geordiejesus]

With the northern lights and white widow, stick a dome over the top of them and mist inside 1 in the morning and 1 on the night time, try not to over water. Especially if you presoaked your coco beforehand. Try putting your other two new marshydro lights up at recomended distance. That may help.

 

[Iriee Vibez]

Those plants look fine for their age to me also. You must have had some fast starting plants the other three times you have grown. These are more in the normal range.

 

[Cat]

No expert here but soil grow need a higher PH. I mix nutes in distilled water and then shoot for PH of 6.0 to 6.5

Cheers my friend

 

[Cat]

Those plants look fine for their age to me also. You must have had some fast starting plants the other three times you have grown. These are more in the normal range.

Thanks mate, appreciated