My cotyledons are turning yellow and brownish on my baby plants and around leaves

Ok so this is my first grow and my plants are 13 days from seed and the cotyledon leaves are turning yellow and brownish and also on the tips jus a tad bit. The only one that didnt is my kush skunk plant it took just fine but the rest are bagseed reg. Under 100w mh light, no nutes yet, watering every 7 days, light is about 2 feet from plants and temp is just fine also i did no ph readings cause i use bottled water and i dont have a ph tester, and 18/6 light schedule. please HELP MEEEE

What is the purpose of the cotyledons?

To give the plants nutes for the first couple weeks...also called the water leaves.

Cotyledon leafs (like mentioned above) hold nutrients for the plants first few weeks of life. But they should of stuck around for awhile. I would think you are not giving enough water.

Are you sure? I was thinkin that the light isn't intense enough. But maybe cause in other post i've read people say they water daily.

Lift your container after you water them (allow water to run off) then go back in 9 hours and lift again then at 18 hrs and lift. Now judge how fast they are drinking. And what it feels like when plant gets light, thats when u feed.

That helped allot dude...will do.

That dirt looks crappy. The containers are tiny. The light is too far away.

Can you buy a bag of nice soil to put these in? If you transplant into 1 gallons of a nice rich soil and lower the light, you will be golden.

Also, it is time to feed your plants. When was the last time you didn't eat for 13 days?

Do not overdo it. Hell, you have not been feeding them, so do not go full strength. Use whichever nute you choose at half strength.

Lower that light, put a fan in there.


Tommy

ps - cotyledons turn yellow and fall off anyhow.. i suspect your older growth would be next, ie. you are verging on N deficiency.

u must be a real grower....
for one dirt is cheap lol but does drain well and has sand perlite and all the met requirements...also i last fed on the 20th but i jus fed today but how often should i be? Should i buy different better soil? Should i lower lights? Cause when i put my hand by the top i feel no heat. help. thanks

And there in red plastic cups from family dollar should i transplant already?

if you could find a bag of fox farm ocean forest or Roots organic potting mix, those would be great. I would transplant into like half gallon pots of nice rich soil and water them in really well... then lower the light .. 1-2 feet away AND hold your hand at plant level for 30 seconds or a minute and see if it gets hot.. A little fan oscillating would help.. a toothpick support and twist tie might help if they get stretched...

That would be your safest bet. those soils come with some nitrogen in them, so you would just let the babies grow a while and not worry about feeding for about two weeks.

Well, i think your soil isn't that great and an upgrade (transplant) wouldn't hurt.

ok bro thanks for the feedback...i watered yesterday and they all look better this morning already so that probly was the problem...by tomorow im gonna buy foxfarm potting soil, put plants up a few inches and water using just water. I am using the closet they are in now which is bout 2'x1.5'x5.7'(LxWxH) for vegging and a grow tent that i got from amazon for $100 dimensions 3'x3'x6.5' for flowering with 100w mh for veg and 100w hps and 100w mh for flower...now wat is the max wattage u think i could use without the electric company getting suspicious? remind you i live in a 2 bd apt and dont burn allot of energy and the second bdrm which is empty is where the energy will be burning at.

tommyo3000 said:

That dirt looks crappy. The containers are tiny. The light is too far away.

Can you buy a bag of nice soil to put these in? If you transplant into 1 gallons of a nice rich soil and lower the light, you will be golden.

Also, it is time to feed your plants. When was the last time you didn't eat for 13 days?

Do not overdo it. Hell, you have not been feeding them, so do not go full strength. Use whichever nute you choose at half strength.

Lower that light, put a fan in there.


Tommy

ps - cotyledons turn yellow and fall off anyhow.. i suspect your older growth would be next, ie. you are verging on N deficiency.

Click to expand...

Ok so thanks to you ive rethought everything and since these are my first set of plants i am going to put my tent up get my 400w mh from friend transplant into fox farm ocean forest potting soil and hook up my intake fans and dont use my veg room until clones...thanks pal.