HELP PLEASE!! New RDWC grow - 1st time. Seedlings in trouble! SOS

oceangreen

Well-Known Member
Nope just do the things I told you to do and it will be get much better.

Your hydroton question: its too late to change the hydron tone. You coould try to presoan in 5.7PH, a new batch and carfeully repalce most of the old.
Yes it will give acicdity problems and if you did it in rock wool, then all the more issues.

Next time use sure to grow cubes

whats your lights and how high above are they?
 
After seeing some gunk in the buckets, I decided to take the time to clean out the whole system.
This happened on Saturday:
Thoroughly cleaned and flushed the system. 4 times flushed and scrubbed down.
I had some spare hydroton so I soaked that overnight in 5.7 water. I took all the plants and carefully transplanted them into a bowl with those hydrotons. I then took all of the hydrotons, rinsed them thoroughly, and then soaked them in 5.7 water for about 5 hours. Hope that helps. After thoroughly cleaning the system I added new water, with 1/4 nutes (about 250 PPM) lucas formula GH, let the chiller cool it down to 74, then returned the plants to their homes, being careful not to damage the roots much. The roots were ok, but there was definitely some brown rot going on in spots. They were definitely growing though.

The lights are 65 watt 6500K CFL's. Each plant gets its own light and the distance is anywhere from 2-4 inches above the plant. The hanging system isn't the best. The CFL's are hanging from chains in a double socket at about a 70 degree angle to one another over the plants. The light is bright at the plant and not too hot. They haven't stretched much at all since moving them into the tent, and I assume that's a good thing while the roots grow and stabalize. Temp is constant around 80, humidity was 50, but has dropped to around 45, and the water temp is 68-70, confirmed by the chiller and a digital readout from one of the buckets.

I will post pics later today of each plant.

QUESTION: The air pump I'm using supplies the res and the 4 buckets. It is a 45LPH air pump, meaning at max 9L per bucket per hour. Should I aim for more?

Thanks guys.
 
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