Okay so I am growing in an aerophonics system with hydroton in net baskets and sprayers that spray the roots/baskets for 24 hours a day with 4-30 minute breaks in there 24 hour cycle. My questions is how long do I have to flush since I am not in soil? Is 48 hours good or do I still have to rinse for 2 weeks? Also I dont have any clearing solution I was just going to use plain ol ph'ed water is that okay also?