Help. Seedling tips turning brown

[Canada4crop]

Hi there. My 8 day old seedlings are starting to brown on the tips. They are in promix hp 5 gallon pots. Not a heat issue. I have not added nutes yet. Could it be chlorine in tap water? I did not let the water sit before giving it to the plants. ph was lowered with lemon juice to about 6.
Thanks so much for the help! They are 4 different strains of autoflowers

 

[Fender Guitar]

maybe the soil is too hot (contains too much nutrients)?

 

[Canada4crop]

I thought about that as well. But I believe the promix hp plus about 20 percent perlite should be fairly low in nutrients

 

[Fender Guitar]

is your tap water hard (contain too much nutes)?
check the ec/ppm of your water.

 

[Canada4crop]

My tap water is not hard. I will double check though, great suggestion.

 

[Fender Guitar]

It could be the chlorine lile you said. try to leave the water in a container overnight so the chlorine can evaporate.

 

[Canada4crop]

Yeah I will definitely do that. I thought I could get away with water straight from the tap, beginners mistake.

 

[Mustangmike]

Should be fine with the water soils probably a tad bit hot as previously stated most tap water only has 2 parts per million of cl2 not enough to murder a plant just kills a few soil bugs before its gone.

 

[hotrodharley]

I thought about that as well. But I believe the promix hp plus about 20 percent perlite should be fairly low in nutrients

Don't adjust anything. Tap water straight is fine. Do not overwater! 5 gallon pots? Pro Mix has no nutrient value.

How close is that cheap light?

 

[Canada4crop]

Yep 5 gallon smart pots I gave them a big water 3 days ago. Soil is still moist. My cheap 1000w equivalent led is about 20 inches up. I also have a couple of 40w cfls about 4 inches away. How'd you guess it was cheap? haha

 

[HitemwiththeHine]

Yep 5 gallon smart pots I gave them a big water 3 days ago. Soil is still moist. My cheap 1000w equivalent led is about 20 inches up. I also have a couple of 40w cfls about 4 inches away. How'd you guess it was cheap? haha

It's purple

Nah some of em work pretty good