im going to try and make it quick and to the point, im new here and this is my first grow. i germinated my seeds in rapid rooters, and then placed those into my hydro set up which consists of a tray with 8 3 inch rockwool blocks, under that i have a resevoir with a pump to water all the plants(the tray drains back into the resevoir)..... its been about 2 weeks since they were seeds and the roots are starting to come out the bottom of the rockwool blocks.... do i need to put rockwool slabs under the blocks for the roots to grow into ? also my plants are a little bit droopy and the leaves are all going in different directions? could that be over watering or over nutrients? People have told me to water 20 min every 2 hour,s i have found that is way too much and the pump only goes on now 4 times a day for 30 min each time! any siggestions or info is greatly appreciated ,thanks!!