I don't know about a 'tier method' BOG worked with Bubblegum strain and created some of his own very nice hybrids.

Cutting the bottom of the bag off, i place it into the partially filled 5 gallon pail. Then I use a sissors to triim off the bottom few inches of the bag and fill around it with potting soil. I water both from the top and from the sides to keep the soil equally moist.

Thanks for the messages, Deleaf, Sarah and Frosted.

Shov