you should check out slab trays, they are 6inches wide by 4ft long and a plug and drain on the end, i think they make them in 6 8 and 12 inches wide, i am going the route of top feed in net pots in a flood table for my mothers, and i was thinking of using these trays, personally i am looking for watering times, i dont want to us a drip emitter, i just want to run water out of a 1/4 spahgetti tube with a tee to water evenly, what shecule should i go for? 15min waterings 3 or 4 times daily?