NFT Oxygen Problems?

R

reallycoolguy

Active Member
Hey guys,
so i started my current NFT grow about 2 weeks ago. It is my first Hydro grow, i was using rockwool for about 3 years before.
I started my seeds in coco cubes and transfered them into the nft system after a week.

The roots werent long at all so I raised the water level so all of the cube is fully submerged in water. It is more like some kind of RDWC now.
Now I got signs of overwatering. Really slow growth. I thought that would not be possible in hydroponics? The plants are turning yellow from the top and are hanging down.
PH is stable 5.8 and water temperature is 20 degrees celsius. I use a small airstone in my reservoir but maybe it is not enough?

Is it bad to fully submerge the rockwool/coco cube in the water (maybe some DWC guys can help me out here)?
 
rkron0413

rkron0413

Well-Known Member
reallycoolguy said:
Hey guys,
so i started my current NFT grow about 2 weeks ago. It is my first Hydro grow, i was using rockwool for about 3 years before.
I started my seeds in coco cubes and transfered them into the nft system after a week.

The roots werent long at all so I raised the water level so all of the cube is fully submerged in water. It is more like some kind of RDWC now.
Now I got signs of overwatering. Really slow growth. I thought that would not be possible in hydroponics? The plants are turning yellow from the top and are hanging down.
PH is stable 5.8 and water temperature is 20 degrees celsius. I use a small airstone in my reservoir but maybe it is not enough?

Is it bad to fully submerge the rockwool/coco cube in the water (maybe some DWC guys can help me out here)?
Click to expand...
Yes over watering can happen in hydro... i lost a plant due to root rot. Drop your water level.
 
R

reallycoolguy

Active Member
rkron0413 said:
You say your flooding the cubes? If you can try to drop it low enough for like a quarter inch to be submerged should help out. The cubes should soak it up
Click to expand...
Well if they are sucking it up its gonna be always wet also so no oxygen right? Or is it okay if the cube is always wet but not fully submerged?
 
R

reallycoolguy

Active Member
I think I will build an DWC cloner because i need it anyways. I am going to take them out of the nft and put them in the dwc cloner until the roots are long enough. Good idea?
 
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