This is a great & versatile growing system. The top inner pot has drainage holes ( mesh type bottom), this is the grow pot that sits into another sealed pot & has 3 adjustable heights.
This comes in very handy when you have plants of different heights. Works great as a larger , multiple pot daisy chained system. The 3rd pot or base is optional, it simply elavates the system as it's a top feed recirculating system that needs to drain back to a reservoir. Very sturdy well made product at a very good price.
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