Woke up to a bit of a surprise this morning. The hydro unit I'm using is an air-driven drip feed unit. A fishtank type air pump send air into the unit which then forces water out of little tubes right at the base of the plant. The water comes out in little spurs and it almost looks like the machine is spitting on the plants lol. When I started it up I noticed that the water was hitting the seedlings hard enough to shake them. I was a little worried but then decided that it would have a similar effect to having a fan on them and would make for strong stems. Boy was I ever wrong
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Two of the plants have responded to the constant pressure by laying down so that they're under the stream of water. The top of the seedling then turned back up to the light, making the stem take on sort of a long S shape.
I've stood the two plants back up and tied them to a small bamboo stake for support. Also build up a little water break with clay pellets in front of each plant so this doesn't happen again.