I am currently running an ebb and flow system but it seems like the plants are overwatered or underwatered frequently. I am using Rockwell flock as my medium in 1 gallon pots, 25 under each 600 w. I have seen some posts about 2 liter hempys and wanna give it a try and just hand water them every other day as I do have the time but I am worried about times when I have to go away for periods of up to a week. This is infrequent but happens. Is it possible to flood the 2 liter hempys just on times when I am away or do they require watering from the top down? If this isn't possible I will probably just use my 2l bottles I collected and use them as regular pots to replace my 1 gallons pot. Any advice will be appreciated.