Seedling Problems!

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dioxide8

Member
Hey new to the site, my seedlings are showing some serious signs of stress but i have no idea what from. They were transplanted into 1 gallon pots of happy frog with dolomite lime and 25% perlite about a week ago. They are under 600 watt MH lights. Temperature high/lows have been 64 and 82 but usually are 73-78. The RH varies from 20-30%. There is good air exchange however the intake air comes from my house as opposed to outside. I cant seem to figure out the issue here seedlings are looking worse by the day and more and more are looking affected.

Thank you for any help
 

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MrMary

Member
Can't see the pics but would guess from set up its heat stress causing your issues. How far is the light above tops? 4 ft hopefully. Use cfls or T5 for seedlings and save the electricity $$ and your girls.
 
vostok

vostok

Well-Known Member
What made you use the dolomite lime ....? that be the issue for sure, keep a fan in there plants gotta breathe too, red stems and very early is falling night time temps perhaps ,,keep a temperature gauge in there, and 20-30 Rh is way to low, leave a pot of water to evaporate off try going for 55-65% Rh, happy frog is another FFOF soil and very 'hot' you done well mixing in 25% perlite ,...but I'd go 33-55% gives better drainage and to avoid compaction ...good luck
 
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dioxide8

Member
Vostok I added the dolomite lime because I was told it would help to regulate the ph of the soil. Adding it hurt me? Thanks for the tip on more perlite I'll go more aggressive with it next time. There is good air movement but I did just go get an additional humidifier to combat the low humidity. I have the temperature monitored its low is 64 but rarely ever gets below 68. MrMary they were under cfl until transplant into 1 gallons now they are in my veg room. The 600 watts are about 3 feet above but looking at it ill probably raise them right now.
 
*BUDS

*BUDS

Well-Known Member
They look terrible and things are deteriorating. The ph is out and your burning them, either from feeding or the soil is too hot with the wrong ph.
 
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dioxide8

Member
Well damn. I'm not feeding so its soil. I don't understand how the ph got messed up I give them RO water with ph between 6.5-7?
 
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bondoman

Well-Known Member
dioxide8 said:
Vostok I added the dolomite lime because I was told it would help to regulate the ph of the soil. Adding it hurt me? Thanks for the tip on more perlite I'll go more aggressive with it next time. There is good air movement but I did just go get an additional humidifier to combat the low humidity. I have the temperature monitored its low is 64 but rarely ever gets below 68. MrMary they were under cfl until transplant into 1 gallons now they are in my veg room. The 600 watts are about 3 feet above but looking at it ill probably raise them right now.
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I think a lot of people just starting get steered wrong with all the advise about using dolomite lime. I didn't put much in my FFOF soil and have been fighting high PH since the start. Even putting 5 PH water I keep getting over 7 PH runoff. Just a bad idea IMO but that's just me. It's weird, your spacing looks like not enough light but 600W is overkill.
 
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dioxide8

Member
Well.... Guess I'm gunna hold off on dolomite lime in the future. A bit tight at the moment due to last batch of plants taking awhile to finish will be moving a lot of plants from veg into flower in a week though so space is coming.
 
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okanaganoutdoor

Member
Dolomite lime has a ph of 7 so it's not what's causing ph problems. If you have any ff left without the lime added you should run some ph7 water through it and test the run off then you will know if you need to raise or lower your ph.
 
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okanaganoutdoor

Member
You don't need to raise your light either man. 2.5 feet over canopy with a 600w is fine. Your plants aren't suffering heat problems. They are suffering from ph problems and possibly too hot of a soil mix. Some of your plants look fine but the worst ones are probably a light feeding strain
 
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okanaganoutdoor

Member
. It's weird, your spacing looks like not enough light but 600W is overkill.[/QUOTE]

How is 600w overkill for that area? A 1000w bulb has an optimal range of 4ft by 4ft... Have you grown with a proper indoor set up before?
 
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okanaganoutdoor

Member
Is it just the 4 seedlings in the pics you're concerned about? The interveinal chlorosis (yellowing) on them is caused by poor ph. the lager plants in the lower parts of your pics look alot worse than the seedlings. They have a combination of ph problems and nutrient burn as you can see with the curled down leaves with burnt tips and yellowing.
 
Alienwidow

Alienwidow

Well-Known Member
Wow, every person has a different answer for you. I feel bad for this guy. First off, stop chasing your ph in soil. Your not going to change it by adding phd water. Your just going to screw up the root zone. The other thing is that you have a yellowing issue with all your plants which means your doing somthing wrong to all of them. Im going to take a guess and say its probably your feeding and your drainage. Your either over feeding or your not dealing with runoff. Runoff is a common problem with high ppm feeding. Where does that fertilizer go when you flush it through if your not dealing with run off? Right back in to build up.
 

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okanaganoutdoor

Member
Alienwidow said:
Wow, every person has a different answer for you. I feel bad for this guy. First off, stop chasing your ph in soil. Your not going to change it by adding phd water. Your just going to screw up the root zone. The other thing is that you have a yellowing issue with all your plants which means your doing somthing wrong to all of them. Im going to take a guess and say its probably your feeding and your drainage. Your either over feeding or your not dealing with runoff. Runoff is a common problem with high ppm feeding. Where does that fertilizer go when you flush it through if your not dealing with run off? Right back in to build up.
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So you're saying ph doesn't matter in a soil setup???!??? Not sure where you got that info from but youre out to lunch! The problems he has are definitely ph related! Also how does correcting ph screw up the root zone? It's the roots that control nutrient uptake and ph being in the proper range is what allows nutrient uptake to be in harmony and optimal. If you actually read what this guy said he hasn't fed anything and the fact that he's usimg foxfarm suggests he is doing any feeding organicalls which would nearly eliminate your theory of "build up"... Salt build up is from chemical ferts for the most part
 
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dioxide8

Member
Alienwidow said:
Wow, every person has a different answer for you. I feel bad for this guy. First off, stop chasing your ph in soil. Your not going to change it by adding phd water. Your just going to screw up the root zone. The other thing is that you have a yellowing issue with all your plants which means your doing somthing wrong to all of them. Im going to take a guess and say its probably your feeding and your drainage. Your either over feeding or your not dealing with runoff. Runoff is a common problem with high ppm feeding. Where does that fertilizer go when you flush it through if your not dealing with run off? Right back in to build up.
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Thanks for the help everyone yes everyone saying something different has sucked but it is definitely the ph of the root zone being off. Yes there are issues on older plants as well (people watching my plants over holidays over watered and over fed) I have never experienced ph problems in the past hell barely even ever paid attention to it (just made sure water they got was 6.5) now im seeing all kinds of ph problems. Thats what made me start new seeds in first place but these are showing same ph issues. Would flushing or transplanting solve either ph issues or am i kinda screwed on these seedlings as well?
 
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dioxide8

Member
sorry my medicated ass forgot to include the results of testing the soils ph. When adding water with ph between 6.5 and 7, the plain bag of happy frog was between 6.5 and 7. My dolomite lime soil is sitting at 7.5ish
 
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