RO means 'Reverse Osmosis.'

A few companies use this method to purify their water. Just look at the labels when purchasing -- look for reverse osmosis filtering, or any variation of such.
Kush Over Reviewed by Kush Over on . Bubbler System Question Been getting alot of good info here, thanks Latewood and all. I have been growing in dirt for sometime now and had a hydro kit that I bought setting around and finally decided to give it a go. Soo... Do I put the Rockwool at the bottom of the net pots let them get wet for a day then put the seeds in the Rockwool and cover them with the little round stone sort of things? I was hoping to start this morning but noticed last night, when I put the stones in first that alot of them fell Rating: 5