Chlorine burn?

Hello everyone, I have a quick question and was hoping to get some advice.

I'm currently growing 3 White Widow plants that I stated from seeds about 3-4 weeks ago. I've just been using tap water to water them. The Ph is at 7 and the TDS meters reads 80ppm. At about 3 weeks I thought it was time to start feeding and used a 1/4 strength mixture from the first week of the GO box.

About 2 days later one of my plants started reacting badly while the other 2 seemed fine, at first, the other 2 started to show minor symptoms similar to the first plant about a week later. The discoloration started at the bottom and quickly moved up.

Could someone please tell me if this is due to something in the water like chlorine, chloramine, fluoride? I thought it was safe to use given the PPM is 80 which seems low for tap water.

Thanks in advance

Never heard of a chlorine burn. I'd supplement with cal/mag as your tap water likely does not have it readily available for the plant and most bagged soils I've run seem to be short on it.

Bugeye said:

Never heard of a chlorine burn. I'd supplement with cal/mag as your tap water likely does not have it readily available for the plant and most bagged soils I've run seem to be short on it.

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Thanks, I'll give it a try

What soil, temps humidity? Potassium sulfate is what that plant needs not cal\mag...

delstele said:

What soil, temps humidity? Potassium sulfate is what that plant needs not cal\mag...

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Hey, thanks for the reply,

I'm using Pro Mix bx and temps are around 75F during the day but drop to the low 60s at night. The humidity has been around 50%

Is it wrong to assume the water is safe (given to lower ppm in terms of tap water)? or Is there more to it?

And I thought it was weird that the problem started shortly after I gave the plants nutrients, total ppm was at around 150 and there was a bit of potash in it. Maybe there wasn't enough?