Rockwool with ebb and flow

Disweed

New Member
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Using an ebb and flow system. Grossly over watered. Serious root rot. I think Iput my cubes too low. Can I lift them? They are maybe an inch and a half or two from bottom of table. I haven’t watered for three days to dry them out. Thought they were good but lifted a dead one the one you see here and it’s soaked. How long should I wait to let roots come back for the ones that are alive? I’m watering at 900ppm the water just touches bottom of cube and I recycle the water for several waters. I don’t want to pull them up because I will pull roots. Do I just have 4-5 days between watering? I’m putting lots of air into my resevoir and I have a trolmaster so I’m totally dialed in to my room and on top of any problems. I haven’t done rockwool in 25 years and just had lapse of memory on how to do this. Was watering everyday every 4 hours for fifteen minutes but this much water filled my tables and drenched the cubes so I knocked it back then held off for a few days then tried every two hours for two minutes. They definitely were and are showing signs of over watering and the root rot on dead ones are bad.
anyways is it salvageable somehow? I haven’t kicked yet.
 

Darkoh69

Well-Known Member
Definitely dont stop watering them! 2 minutes every 2 hours sounds good. A 15 minute flood is almost too long so lack of oxygen at the roots maybe the reason the problem started. Put a small amount of H2O2 in the res to stop the rot. & ideally keep the res bubbling violently to get as mush oxygen into the solution as possible
 
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