Started some compact determinate tomatoes in rockwool cubes to go in a waterfarm system. I had it running and hour on and two off from about 8am to 11pm and off at night. The rockwool just stays saturated and the leaves are turning brown on the edges so I'm thinking I need to slow down the drip. I used rockwool because I read it should keep a good air to moisture ratio but what is going to happen when the roots go past the rockwool and part of the root system is in the cubes and the rest in the rock? I have it set to run for about 1/2 an hour at 8am and the same at 8pm. Looking for suggestions on timing the dripo cycle and eliminate some of the trial and error of getting the timing about right or at least close. I also have some small pepper plants in another waterfarm bareroot and they seem to be doing much beter than the tomatoes in the cubes. Brand new to this so any suggestions are welcome!