Why do my plants of the same strain look so different after 4 weeks?

Hi guys

Just wondering why these plants on the same watering/lighting schedule look so different? And how are they looking in general?

They are both Bubba Kush, started together in jiffy pellets and transplanted 7 days ago, they had a bit of a slow start but took off in the last 3 or 4 days. Started spraying them with seasol foliar spray every 2nd day from transplant, so a total of 3 times now.

Overall it’s a first time grow so how am is it looking and is that just a burnt tip on the lower leaf of plants? Running 4 x 14 watt cfl 6500k @ 2-3 inches and 600w(276 true watt) led from 36 inches.

When should I start feeding nutes? They are 3.5 weeks from seed and didn’t want to start yet as they were slow at first and I think the soil it’s in now has dynamic lifter in it.

Thanks in advance

What soil are you using? That looks like barkdust. It's definitely "hot and acidic" soil. Get some better soil and transplant those ASAP. You still have time.

Good Luck

I’ll transplant tomorrow and keep you posted. It’s in Yates potting mix with dynamic lifter

jayzigger said:

I’ll transplant tomorrow and keep you posted. It’s in Yates potting mix with dynamic lifter

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I'm sure Yates is good for Geraniums but it's too acidic for cannabis. You don't want soil that already has fertilizer in it.

Gotcha. Thanks a lot transplanted today, water run off was 6.0ph. Will let you know how they are going in a week or so, hopefully this doesn’t set them back too much.