white tip and brown spots within yellowing

i think its either too much chlorine, been using tap water lately. or it could be a zinc problem.

I would like to have a professional opinion though.

first pic shows brown spots and yellowing

2nd pic shows the white tip.

Setup:
-4 27w 5000k cfls
-1 23w 2700k cfl
-rockwool medium
-using schultz 10-15-10 at 1/8 strength every other watering
-pre mixed solution is at 6 pH

Don't water as often make the roots stretch. Start using distilled or r/o'ed water. You don't need to be applying base nutes yet. Try using a root stimulator or beneficial bacteria. PH 5.2-5.8 is preferable.

You are in rockwool try lowering your ph a bit. I think 5.5 - 5.8 is ideal for rockwool. Double check that though. How old are these?

EDIT: ^^ What Sealion said..yeah..that. lol

they are just babys, 3 weeks, 4 days since they broke through the surface

i just flushed it with a ton of 5.5 pH distilled water. about 2 gallons worth

bljeep90 said:

i just flushed it with a ton of 5.5 pH distilled water. about 2 gallons worth

Click to expand...

Two gallons may have been a bit much, but ok. Let them suckers dry out now.

Next time before you start (new seeds/clones), soak your rock wool in 5.5 water for a while. It will help condition them and you will have less ph swing.

Remember reading that somewhere.

yeah i soaked it in 5.5pH for a day before planting but i havnt been usin ph'ed water whenever i watered it