av a look at these pics ,its 3 weeks old, does it look ok ,like the rest ov my plants its got yellowing leafs at the very bottom 2, thinking its mg def, and it just got waterd b4 i took these pics so it might be a bit floppy.

this 1 is 8 inch high...

what lights u using? looks a little skinny for 3 weeks

never mind just looked at your profile 125watt, not sure aout your bottom leafs cant see

1x250w hps, got anuvver at my peeps, so im gonna be using it for flowering.the bottom leafs are all yellow with purple going up the stem to the viens and now the leaf is starting to brown ,so its gonna be a gonna, just hoping its not gonna spread, would it allready be affecting the otherleafs by now or does it spread.pretty sure its an mg def though im using compost and apparently compost never has enough mg in it?

I can't see it having a deficiency at 3 weeks? More likely your compost is too hot I would have thought. ie nute burn.

You don't need to add nutes at the mo as the compost has all it needs for a while

don t give the plant to much water

it could be the soil is hot, and there should be some mg in the soil,
give em a water when ther r bone dry and see what they r like in a few days

ok iv took the best quality pics i can do at the mo, on my web cam, but you can definatly see perfectly wat the problem is, just need an expert eye to take a look at em, n give me sum well needed advice... on the 1st n 2nd pics you can see the yellow just starting on the next set ov leaves in the middle, looks like lite shine but its yellow .any ideas

aaaaaaaaaagggggggggggghhhhhhhhhhhhhhhhhhhhhhhh i just want perfection for once..

not sure but some of the other leaves look to be slightly curling under themselves, that is the first sign of over nutes i think.

you could give them a right good flush with water or they maybe need a little more time to get used to the compost.

Young plants can be a pain tho, give them a few more days they may get used to the compost.