You don't need liners. Just use the plastic net pots.
The liners are one more thing to clog and host bacteria and fungus and algae.
As long as the hydroton doesn't fall out, and it shouldn't as they were designed to be used together, the liners are simply one mroe item that's GREAT for parting growers and their money.
The liners are necessary with a finer particle like perlite or coco coir, which WILL fall through and clog up your delivery systems.
stinkyattic Reviewed by stinkyattic on . Opie, I Need A Little Help i figured id ask you because your one of the few who give me good, accurate answers, but anyway its about my rainforest 66, i got my seeds today and began to germ then and i setup the system but its a little different than im use to and, it has CocoTek liners in the net basket then my hydrotron in the cocotek liners, and the spray does not penetrate the cocotek liners and my hydrotron are dry(very dry), now ive only had it powered on for about 12hours but it seems almost like the liners are Rating: 5