Right now you are at a crossroads. Its the old Hydro vs Soil question. I think if you are going to do Hydro, you will not want to keep it in the AG. The reservoir is about 3/4 a gallon which is about the smallest you want to get with weed. What will happen is your root system will begin to outgrow your AG and you will end up with smaller plants. The choice is yours on Soil vs Hydro, but if you go the water route...you may want to look into doing a DWC setup (Deep Water Culture). There are links on DIY Hydro setups in the GrowFaq. From what I hear soil is easier, especially for a new grower....but I've been hydro my whole growlife and couldn't help you with that.