I agree,sounds like too much water ,have had the same problem with rockwool before, or they are stetching from not having enough lumens like zandor says.Seedlings use very little water, because they have a very small root system.Rockwool can become saturated with water quick, especialy after it has been squeezed,like so many people often do after presoak.I would say back of the h2o a little ,and move the hailde to 2.5 foot from the tops ,then lower the light 1" at a time(several hours or a day) from there until the plants start growing out instead of up.
just my opinion , I could be wrong
hondo Reviewed by hondo on . What's wrong!? 2 Week Seedlings Weep? I have a drip system setup right now, I have a 1" rockwool cube placed in a drained cup with expanded clay pebbles, everything is working well except last night the stems drastically started growing horizontally. They were growing straight up, now they are falling over... what's wrong? They're about 6 inchs with their beginning two sets of leaves. What problems could there be? Can they have too much water? Should I support them more? Or transplant them to a bigger system? Or will they Rating: 5