I use to use 3g soft pots but now I use 5g. I have noticed a substantial increase in the stalk size. Yes I do veg them longer than most ppl do but I put 1 plant under 1 1000w and i'll get 1.5-2 out of her depending on strain. veggin normally lasts 1.5-2.5 months also depending on strain but with a perpetual grow I always have clones, veg plants, flowering, and harvesting every 1.5 weeks. How I sanitize the pots after each use is throw them away. What's $4 to get 6k without the hassle not to mention you don't have to ruin your washer filling it with all that dirt. Just like certain chemicals or lights, if the product comes out bigger or better, then it'll be money well spent.