With 6 plants there are some tubs that walmart sells that I used to do this. 1 large tub sits on bottom and smaller (capacity wise) one goes ontop of large. I ran this with 6 gals. Let me know if need pics of tubs
tinytoon Reviewed by tinytoon on . Reservoir size? I'm going to be doing an ebb & flow project for 6 clones. A 600 watt hps will be used throughout the veg and flower stage. What would the optimal size reservoir be for growing 6 plants this style? It seems that the smaller the size reservoir, the less nutes/ additives would be needed etc, but I'm sure there are downsides. So what size would you recommend? Rating: 5