Help: One day – 5 plants DEAD!!

Hello friends, hope you could help me with a problem in the grow room, it looks pretty critical!

First of all, the setup:

- HPS 600w light
- Hydroponics top feed recycling system
- Middle of 4th week in blooming
- Canna fertilizer feeding schedule
- Fan on 24 hours
- PH: 5.5 - 6
- EC: 2 - 2.4
- Unknown seeds

What is think is the problem:

Last Saturday I went out of town and because of personal reasons the room was left close with no exhausting fan for about 36 hours!

Before that incident they were all looking fucking Georges, with nice stretched and firm leaves, but now they look very sad and floppy –

the canopy still looks ok but when you take a look on the bottom you see how some of them are yellowing, some with narcotic patches, and some are just wilting - five of the plants were Already dead

Also - I used to add to the resevoir about 20 liters each day - now I hardly add 5 liters, they really slowed down thare drinking...

Yes, I know it's my bad – the question is what do you think is happening to the plants right now (because of my bad) and more important – what I need to do to make things better??

Thank you very much for you time, and sorry for my bad english...

The heat from the 600 watt killed them. The temperature got too high.

jayskool said:

The heat from the 600 watt killed them. The temperature got too high.

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But as you can see the canoppy looks fine and most of them are still alive -
are you saying they are doomed and i have nothing to do about it?

Well you can possibly rejuvenate the ones that still alive. Just cautious of the temperature in the grow room. From the pictures, it was so hot that the leaves got burnt. Get SuperThrive from a Walmart garden center and feed them with that every two times you water. That will help them get back on track sooner than later.

jayskool said:

Well you can possibly rejuvenate the ones that still alive. Just cautious of the temperature in the grow room. From the pictures, it was so hot that the leaves got burnt. Get SuperThrive from a Walmart garden center and feed them with that every two times you water. That will help them get back on track sooner than later.

Click to expand...

Thanks a lot!

Any other suggestions friends?

Besides keeping your temps under 80 degrees Fahrenheit. I occasionally mist my plants with room temp water to cool them down a lil bit. Make sure u have constant circulation of cool air flowing into your room and of course you know exhaust the heat. Water your plants every 2-3 days and feed them every 2-3 times you water.

next time get yourself some good potting soil and get outa that hydro mess, too many probs imvho