Modern Planters call for modern drainage solutions as drainage is critical to the health of plants grown in containers, and drainage is very difficult to remedy after the fact. Generally more "tended" plants die from drowning than from lack of water. "Old School" drain holes on the bottom and "gravel" drainage medium simply do not work and will quickly clog.
DeepStream pioneered modern drainage practices with side-wall drains and 3-layer drain packs. DeepStream places from one to three 3/4" threaded drainage ports on its stock proprietary plastic planter liners, to which various plugs, hose barbs and valves may be attached. Liners are non-structural and are meant to be placed inside planter boxes.
Depending on your plants, planting mixture, and local weather, you may need to add more drains. Additional drain holes can be added as required by drilling additional holes in the side walls. DeepStream-installed drains are centered about 2" above the bottom to allow the clay "fines" in planting mediums that are responsible for clogging to settle to the bottom.
Standard ABS liners and custom-welded liners come without drain holes, but they may be drilled as required. Reservoir liners come with one drain port, and more cannot be added.
If your planters will not be dug up and replanted every year then we strongly recommend adding Drain Filter Packs for each drain. A three-part filter combines the waffled plastic backing of TREMdrain, three layers of filter fabric, and Biobarrier buttons to inhibit root growth. They may not stop aggressive root systems like Bamboo and Clusia.
Filter packs, when used in conjunction with clean 1-2 mm inorganic drainage material to slow the flow of the water to the drain, could prevent clogged drains for a decade or more.
DeepStream Designs Brand 3-year Stock Liner Warranty: If a liner fails due to material defects during the first three years after first date of installation, we will provide a replacement, including shipping. DeepStream Designs further warrants that our liners will withstand normal and reasonable use of sharp shovels and other tools within the natural process of planting and maintaining the planted area. This warranty does not cover excessive, abusive or unreasonable actions or the use of inappropriate tools to plant and maintain the planted area.