I agree with everything ZANDOR said...

Be very careful you do not overwater rockwool cubes...

: )
Garden Knowm Reviewed by Garden Knowm on . How long to run drip system I have a homebuilt drip system. It consists of a large rubbermade with holes cut in the lid for 8 net pots. There is a submerged fountain pump inside the rubbermade that pumps up to each of the pots. How long should I run this mother? Right now it is runnning for 15 minutes every hour. Keep in mind that I am limited to only 15+ minute intervals as thats all my timer allows. Right now the plants are pretty small. Rating: 5