which kind of hydro is the one im thinking of?

OK which hydro is the one where u have like a big rectangle or square tray and u basically fill the tray with small pebble baskets right next to each other. Its a great hydro method for fitting a ton of plants for SOG in the smallest space. IM trying to think of the name so i can find a DIY guide to make one. Does anyone know what im talking about? o and btw ive never done hydro, im a soil man so this will be my first time hydroing.

ebb and flow, flood and drain

and where could i find a good guide on info on it and a guide for building one? also do you think i could build one that could be big enough for 60 SOG clones?

there is an eb flow thread on this site. I use 4' 4' tables myself 1k watts per table. Results and yields are amazing. To do it right it takes some micro adjustments and never use rockwool its worthless. Expanded clay is the dankness. If you have to use rw for rooting cube thats ok.

over watering can be issue even with teh balls. Dont water when lights off for veg and for bloom i water once 6 hours into darkness. Lights on i flood 15 min every 2 hours. All strains have loved it I grow about 10 atm. Biggest issue is giving them what they need at all times without overdoing it. gl