Two shrimp tanks and a patio pond.
Interesting find in my researching how to properly prune cabomba that illuminates the difference between high tech tanks and low tech dirted tanks. While reading in a certain high tech aquarium forum people were reporting that if they pruned their cabomba, they would have to replant the pruned tops because the bottom section would turn yellow, then brown and die. The people with low tech dirted aquariums reported that pruned cabomba would send off three or four offshoots when pruned AND they were able to successfully plant the pruned tops. This is a pretty good illustration of the differences between dirted and “high tech” tanks. In the high tech tanks, the cabomba is essentially a free floating plant drawing its nutrients from the water column. The “planted” part in the inert substrate either has no roots or roots that are drawing no nutrients. When trimmed, the top continues to grow while the bottom withers and dies. In a dirted tank the cabomba is apparently drawing nutrients both from the water column and the soil. People reported offshoots from pruned stalks, runners sprouting from the root system and being able to replant the pruned tops. Dirted, low tech tanks provide a holistic approach to plant growth and nutrition.