2 week olds slowly gettin yellower and yellower

[voyz]

hey all, just started a few babies and am having problems. i germinate the seeds then put them in the soil/ growing mix all goes fine for a little while and then they slowly start gettin a lighter green in colour and there only on the first set of real leaves? im stumped as to why this could be happening. ikm lettin the first couple inches of soil dry befor i water and am growing under a 400w son t agro. temp is between 70-80 degrees F.
one of them has gotten yellow rusted tips.
any ideas? i can post pics if needed/.

 

[blowone]

shity im having the same problem but mines are 5 weeks old

 

[jats]

pics would help.....its hard to say without them

 

[DubRules]

are you feeding them..?
or are there ferts in the grow mix..?

 

[naimad1234]

what kind of soil are you using? had that problem the one and only time i used miracle grow. lost 2 babies in just a few days

 

[smppro]

ummm they are hungry?

 

[voyz]

they seem to look alot yellower under the hps light but u can notice the tips have turned white and the edges are gettin yellow

 

[voyz]

in these pics they arnt lookin that yellow but compared to the fresher/newer ones theyre loosin allot of there color(greeness)

 

[jats]

is that seedling mix or potting mix..? if its potting mix,,then theres your problem......try using a seedling mix or better still you can start them in jiffy pots made of peat or coco

 

[darkdestruction420]

ummm they are hungry?

no, thats not the problem. look at them my friend. they are tiny little seedlings 2 weeks old.
his soils nutes are too strong for the seedlings most likely......

 

[c5rftw]

when you say 70-80, is this a guess... trust me, unless you have a digi thermometer with a probe or the thermometer itself at the tip of the plant, you dont know the temp actual temp that the plant is exposed to. btw, how close is your light

 

[c5rftw]

its also could be a ph issue. also you dont need any nutes for 2-3 weeks with decent soil. i would go ahead and scoop out all those i see in those pics and replace with fresh soil

 

[voyz]

hey guys thanks for the responses the pot wiht the white shit /perlite in em is a grow mix i bought from the hydro shop and the rest is just standard potting mix. i have a digi thermometer in there so the temps ok. i let the soil dry before watering. next time ill use a seedling soil but i hope these battle through.
cheers

 

[c5rftw]

ok, they sound fine, lets see what they do in the next couple days

 

[voyz]

these are bout 13 days old from when they germinated is the size normal? light is about 17inches from highest plant. should i use distilled water or anything? does boiling tap water help to purify? when do u start feeding? i fed the first three i tried 2 weeks in and basically they turned yellow and died

 

[c5rftw]

do not add any nutes to the plant when they are that small.. seems like your over watering if its takin that long to grow... usually, once they sprout, in two weeks they should be 4-5 inches atleast

 

[voyz]

wow then im definately doin sumthing wrong

 

[darkdestruction420]

some plants take a bit longer to really kick into gear growing and that combined with the nutes in the soil and/or overwatering problem its growth isnt so bad. once it gets over this little bump in the road they should take off and explode in new growth and will start making up for lost time.

 

[voyz]

im using a 400w son t agro, is there a better lamp for starting off? would a 1000watter help or not at this stage? maybe MH or flouros? also how many plants can i grow under the 400 son t and to what size, and what sort of yield? ide like 4 but if the light isnt enough for 4 i can get get another. let me know what youse think
thanks!

 

[c5rftw]

400w is A LOT for younglings.. even a 23 watt cfl provides all the light you need for one plant for 2 weeks or say around 8 inches