Seedlings not doing so well....add GH nutes?

[texashustle]

My seedlings arent doing so well in thier humidity dome, some are straggling and the others are doing well but have some yellowing of the leaves. I think I put a few too drops of superthrive after reading seedlings get one drop per gallon. I flushed them and put them under cfls instead of my 90 watt UFO. Now reading my GH 3 part flora nutes, its says seedlings and cuttings get nutes @ 1/4 tsp / gallon. I thought it was only distilled water and a drop of superthrive for the 1st two weeks?? Should I add nutes now or wait? Temps are 84-93 and humidity is 90%

Heres a few pics, they are 7 days today from putting in a paper towel

[headshake]

My seedlings arent doing so well in thier humidity dome, some are straggling and the others are doing well but have some yellowing of the leaves. I think I put a few too drops of superthrive after reading seedlings get one drop per gallon. I flushed them and put them under cfls instead of my 90 watt UFO. Now reading my GH 3 part flora nutes, its says seedlings and cuttings get nutes @ 1/4 tsp / gallon. I thought it was only distilled water and a drop of superthrive for the 1st two weeks?? Should I add nutes now or wait? Temps are 84-93 and humidity is 90%

Heres a few pics, they are 7 days today from putting in a paper towel

looks like you could be experiencing heat stress. you need to work on your cooling/ventilation. the 84F is acceptable but beyond 90F might be a bit much for seedlings. these aren't established plants but delicate seedlings.

they don't require high humidity as they are seedlings and not clones. the humidity dome is used in cloning because when you take a cut, that cut transpires out all it's water without having roots to replace it. this is why clones wilt. this is also why you've (more than likely) seen clones with half of the leaf tips cut off.

so take the dome off and get the temps in check before deciding to feed any nutes.


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[stinkyattic]

With the information given...
Rockwool
Distilled water
Superthrive
...

They were getting too much nitrogen, enough to scorch them, but you've flushed, which was a good call...
Distilled water has incorrect mineral content for plants unless you're running calmag. Switch to tap water unless you KNOW your tap water sucks, and if so, you're going to need an EC meter and a bottle of calmag.
Rockwool needs to be soaked in a solution at pH 6 until it holds that pH stable... the factory sends the shit out at a pH too high for pot. You need to adjust it.
Water with tap water adjusted to pH 6-6.3. Are they going into dirt or dro? Dirt, leave the tops of the cubes EXPOSED so they dry fully between waterings and don't rot the stems, and as the roots grow out, you'll be letting the pH drift back to about 6.8 and leave it there. Dro, also make sure there's a drying cycle if you're running flood n drain, and keep the pH stable at 5.8-6ish. Don't forget that the babies need a minimum level of minerals.. calmag... ftw... :D

[texashustle]

looks like you could be experiencing heat stress. you need to work on your cooling/ventilation. the 84F is acceptable but beyond 90F might be a bit much for seedlings. these aren't established plants but delicate seedlings.

they don't require high humidity as they are seedlings and not clones. the humidity dome is used in cloning because when you take a cut, that cut transpires out all it's water without having roots to replace it. this is why clones wilt. this is also why you've (more than likely) seen clones with half of the leaf tips cut off.

so take the dome off and get the temps in check before deciding to feed any nutes.


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Thanks man I like this forum a lot. Good peeps around. So for sure take the dome off huh? Then what put them in my hydro system or just leave them like in the pics with the cfls over them? Yeah I can def get them to stay below 90. I think they were that hot bc of the dome. If I take the dome off, how often do I water or spray them? Thanks again. Way stoked about all this!

[texashustle]

With the information given...
Rockwool
Distilled water
Superthrive
...

They were getting too much nitrogen, enough to scorch them, but you've flushed, which was a good call...
Distilled water has incorrect mineral content for plants unless you're running calmag. Switch to tap water unless you KNOW your tap water sucks, and if so, you're going to need an EC meter and a bottle of calmag.
Rockwool needs to be soaked in a solution at pH 6 until it holds that pH stable... the factory sends the shit out at a pH too high for pot. You need to adjust it.
Water with tap water adjusted to pH 6-6.3. Are they going into dirt or dro? Dirt, leave the tops of the cubes EXPOSED so they dry fully between waterings and don't rot the stems, and as the roots grow out, you'll be letting the pH drift back to about 6.8 and leave it there. Dro, also make sure there's a drying cycle if you're running flood n drain, and keep the pH stable at 5.8-6ish. Don't forget that the babies need a minimum level of minerals.. calmag... ftw... :D

Another great post. Cool. Ok yes my tap is 1740 ppm. Ha horrible. I have to use bottled water. Suggestions? What about RO? Also dont my GH nutes have enough cal/mag to not have to use calmag supps? Yes they are hydro and yes I had my rockwool down to 5.5 before putting my germed babies in. Im doing a drip system.

[headshake]

What about RO? Also dont my GH nutes have enough cal/mag to not have to use calmag supps?

if you are running distilled or RO you NEED calmag+. check it:

http://boards.cannabis.com/hydroponics/155387-if-you-use-ro-distilled-water-you-need-calmag-plus.html

also posted by the amazing StinkyAttic!


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[Squamish]

Don't use any, your growing from seed. They have all they need to grow into plants all on their own. Flush now with distilled water and you might get lucky to keep them alive. Young need to promote them self's, the seed provides every thing they need to start them off just fine.

[stinkyattic]

Make sure your bottled water is distilled, and that you have your calmag, rather than water bottled for drinking, in which case it doesn't have to conform to any specific conductivity standards and can have dissolved metals in it.
Damn your tap water is atrocious. You live in a SuperFund site or summin? Dag, yo. Can you even SHOWER in that or does it come out of the tap in a slurry?

[texashustle]

Make sure your bottled water is distilled, and that you have your calmag, rather than water bottled for drinking, in which case it doesn't have to conform to any specific conductivity standards and can have dissolved metals in it.
Damn your tap water is atrocious. You live in a SuperFund site or summin? Dag, yo. Can you even SHOWER in that or does it come out of the tap in a slurry?

Yeah we can shower fine, it takes some getting used to though. I woke up this morning to my girls all withered and dried up. Maybe the 90w ufo was too close? I soaked themwith 4.9 water just incase the ph was still too high and raised the ufo. Temp is now 83 and RH is 30%. Im having a hard time with these girls!

[texashustle]

if you are running distilled or RO you NEED calmag+. check it:

http://boards.cannabis.com/hydroponics/155387-if-you-use-ro-distilled-water-you-need-calmag-plus.html

also posted by the amazing StinkyAttic!


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Great. Sheeesh I thought the GH flora three part system had enough in it? Where can i buy calmag? Local stores or is it internet only? Thanks :rastasmoke:

[headshake]

i have never used it but you should be able to pick it up at your local hydro store if it's worth it's weight in salt.


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[texashustle]

i have never used it but you should be able to pick it up at your local hydro store if it's worth it's weight in salt.


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Shit bro I think they took a turn for the worst when I took the dome off, they pretty much dried and shriveled up. 2 are ok but 3 will probably die. FML.

[headshake]

if your temps are up in the high 80s or 90s you need to make sure that they are getting enough water. don't over water. if they are seedlings the soil just needs to stay moist.

-shake

[texashustle]

if your temps are up in the high 80s or 90s you need to make sure that they are getting enough water. don't over water. if they are seedlings the soil just needs to stay moist.

-shake

Im doing drip hydroponics. Should I go ahead and put them in there on drip and see what happens? They are just sitting in the tub now in rockwool and Im having to spray them often.

[stinkyattic]

Shrivelling and drying sounds like you may not have caught the superthrive OD in time. Practice your germination technique on some crap bagseeds until you figure out what combination of water/nutes/mineral supplements/media you can safely use... IMVHO, for going into hydro directly from seed, RapidRooters are MUCH more forgiving. Stick the sprouted seed in, and virtually ignore it for a few days, just making sure it doesn't dry out- no pre-soaking or other fussing required.

[texashustle]

Shrivelling and drying sounds like you may not have caught the superthrive OD in time. Practice your germination technique on some crap bagseeds until you figure out what combination of water/nutes/mineral supplements/media you can safely use... IMVHO, for going into hydro directly from seed, RapidRooters are MUCH more forgiving. Stick the sprouted seed in, and virtually ignore it for a few days, just making sure it doesn't dry out- no pre-soaking or other fussing required.

Ha yeah I think two might be ok. I dont have bagseed, I smoke good shit, no seeds. I have a shit ton of rapid rooters so Im good to go.

[perpetr8r]

Make sure your bottled water is distilled, and that you have your calmag, rather than water bottled for drinking, in which case it doesn't have to conform to any specific conductivity standards and can have dissolved metals in it.
Damn your tap water is atrocious. You live in a SuperFund site or summin? Dag, yo. Can you even SHOWER in that or does it come out of the tap in a slurry?

OMG I'm still laughing :thumbsup:

[GetThisOrDie]

Whats up texas... Ive always been told to let the seedlings grow a few nodes under CFL or Flouro before you put them under the LEDs. I am just now starting to use LEDs and ive followed this advice with my first batch. Something about the LEDs being too strong for seedlings? Im not for sure but thats what I heard... might help you if you stay under the CFLs for a little while. Like I said I dont know if this is 100% true but you could try it... dont think it will hurt them anymore than they are... Good luck!

[stinkyattic]

If you have reason to believe your lights are too strong (evidence of acute heat/drying stress in the form of taco-leaves), raise them.

[texashustle]

If you have reason to believe your lights are too strong (evidence of acute heat/drying stress in the form of taco-leaves), raise them.

I raised the ufo up to about 2 feet, added like a 1/4 of the nutes on the bottles of GH and added them to my hydro system. Def more humid in there now and temps are sitting @ 85. Cant fuggin wait to get my northern lights in and do this shit right.

I figure my seedlings will die but put them in the hydro system as a last resort or a what the hell, might as well experiment. :rastasmoke:

[texashustle]

Shrivelling and drying sounds like you may not have caught the superthrive OD in time. Practice your germination technique on some crap bagseeds until you figure out what combination of water/nutes/mineral supplements/media you can safely use... IMVHO, for going into hydro directly from seed, RapidRooters are MUCH more forgiving. Stick the sprouted seed in, and virtually ignore it for a few days, just making sure it doesn't dry out- no pre-soaking or other fussing required.

Ok got my NL seeds! This sound good? I put them in paper towels with distilled water and let them germ a root then stick them in wet rapid rooters with ph adjusted water and only one drop of superthrive for a gallon of water. Place in humidity dome. Let them sit a few days keeping them moist until they come up out of the rapid rooters. Remove the humidity dome and place rooters and seedlings into hydro kit on slow drip. Does that sound good?

Or.....put a seed in a moist rooter let it cme up then put it in the hydro system? Thanks girl Im having issues with this seedling stuff.