Well, if you enlarge the opening, it ruin ruin the beneficial effect of hp aero roots, since they require a certiain droplet size and the requirement to not oversaturate the roots. If your not careful the roots will get too damp and the results will be similar to hydroponics, not saying that hydro is horrible, but it might not be worth going through the trouble of an hp aero setup if it spits out so much fluid- not to mention one of the greatest bonuses of aero is the ability to go drain to waste because of the low volume of spray. I am sure you'll get some decent results though, and I'd love if you kept me in the loop on how your setup goes. I suppose the high pressure should not be underestimated in it's ability to blow through the microbes- I hope it rocks man~!