Need help please

Hey I got a problem with one of my plants I noticed today, seems to be going up the plant from the bottom, can anyone tell me what the problem is and how to solve it? here is some pictures thanks

looks like some heat stress and looks like it might be a man.

chuck estevez said:

looks like some heat stress and looks like it might be a man.

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Ah really? thanks, all the others seem fine and the temp is around 25-27 Celsius, its only effecting one plant at the bottom, nope its female, pre flower showed today

Add some more info please... water, nutes, lighting, environment, strain, age, etc.??

Moldy said:

Add some more info please... water, nutes, lighting, environment, strain, age, etc.??

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THC Bomb feminised, giving it biobizz nutes biogrow bioheavon and algamic every 3-4 days, 5 weeks vegging just stitched to flower today, there in a 80x80x180 grow tent with 400watt HPS grown from seed

Ah thanks! What is your water supply? How's your PH? My first thought is cal-mag issue if you're using RO water. I did a THC Bomb Fem and it showed the same thing a few years ago. I did correct it using Dynagrow Cal-mag additives but I was a little late and had reduced yields but the bud was good.

Moldy said:

Ah thanks! What is your water supply? How's your PH? My first thought is cal-mag issue if you're using RO water. I did a THC Bomb Fem and it showed the same thing a few years ago. I did correct it using Dynagrow Cal-mag additives but I was a little late and had reduced yields but the bud was good.

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Ok thanks our water supply is south west water but there is some problems at the moment with the water being tainted so im getting bottled water from the shop, think the ph of that is 6.5-7, il get some cal-mag additives tomorrow and see if it helps, all the others seem to be doing fine here's a pic (the temperature was low because I had tent open a while)

Good luck! I hope it will help. There's a lot of different problems out there and I'm just going on what happened to me. Your other plants look good. You must be in AZ? I'm in N. NV and use about 30% tap water and 70% RO. The tap water balances out the ph and keeps it above 6.0 as when I add bloom or grow nutes the ph drops a lot without a tap water buffer.