Thoughts on week old Seedling

Hi all

First grow, I’ve got a sprouted silver haze a week old just transplanted a jiffy pellet into a organic soil/perlite and vermiculite mix, question is do you think it looks ok, seems a little yellowish I gave it a bit of seasol and powerfeed the other day and I don’t think it liked it, I have just been giving correct ph water last feed. Any advice on feeding amount, times, nutes how much/ when etc would be appreciated.

I have it under a 300w viparspectra in a small tent with a fan. Thanks