Is there any benefit in not using the baskets and filling the table with grow rock?

Call them stories if you like but they are true and several people are doing it.They grow in large steel builds letting plants get about 5 to 6 feet each.Tables varied I say some people had regular 4x 8 feet and others were custome built out of wood liner with the rubber pond liner material which were closee to 10 feet wide by 20 feet long.Guess it depends how much you wanna spend and how comfortable you feel about your location.I'd luv to show a picture but I can guarantee that would never be one that would be taken lol

The filler doesn't hold the pots in place, it just fills in the empty space between the pots, so that less solution is needed to flood. The roots that grow out would be happier if growing into a flooded media, but like I said, it's not necessary.

The benefit would be that the roots have more room to grow, and much less solution required to flood. The drawback is that the plants are stationary.

HTH

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I was watching a video where the guy was discusting how C02 right around a leaf gets sucked up, and then there's less in that area, and so you need a fan to stir things up... i was wondering if the same is true for the nute solution around roots, and if anyone has tried a propellor in the solution to keep stirring it up around the roots.

Are the roots dark enough in the medium that you don't need to cover them, if using the no basket method?

Well this is what I have read in the threads, books and is what I will be starting as soon as I finish building my cab.22"x22"x7" tray with 4 5"1/2 net pots in the tray with clay balls.I will flood the tray 4 times a day in the 18 hr cycle.I have a 15 gal res.I filled the tray with clay and the res and tested it out.1 and a half mins to flood the tray.I keep the tray floated for 5 mins.The 15 gl res will be easyer to keep the PH stable.Well thats my plain.I cant wait to get it going.Peace