Oxygen Salon and Spa

How to Select a Hydroponic Water Pump

Hydroponics is a means of supporting plant growth without the use of soil. A hydroponic water solution is rich in nutrients that are kept suspended through the use of a hydroponic water pump. There are actually three different types of hydroponic pumps available, and those are the non-submersible, submersible, and semi-submersible.

The submersible type of hydroponic water pump is entirely submerged in a nutrient rich solution of water and salts that make up the perfect environment for extensive plant growth. The non-submersible hydroponic pump is placed in an external location that is never in contact with the fluid solution, and the semi-submersible type is placed in the water solution but the top is never in it and must continue to be dry.

When searching for the correct hydroponic water pump for your needs you really should be aware that the semi-submersible type comes with some inherent risks that may not be seen with the other two. Primarily, the main concern is that since it is allowed to be partially in the water there is a risk that it could topple over and create a disaster in the making. Electrocution from an incorrectly placed hydroponic pump could really put a damper on the benefits of such a system.

As you search for a hydroponic water pump to suit your needs, you will first want to determine the amount of nutrient solution necessary to support the kind of plant growth you are wishing to obtain. This will help you to calculate the size hydroponic pump needed to carry this amount of water throughout your system.

Depending on the amount of space that will be devoted to your plant growing system, you may even need more than one pump to accomplish the circulation required to keep your growth medium at its optimal state of suspension. The type of growth medium you are using will also help to determine the flow rate needed to maintain optimal conditions within your water bath.

For instance, rockwool is often used to provide a footing for plants to grow and remain erect, and it takes up about 20% of the container volume. Clay pellets take up 30% and pea stone displaces about 80% of the water solution. As you may be able to notice, it would take a stronger hydroponic water pump to keep the solution flowing when 80% of the water is displaced by pea stone than it would with the rockwool. It is the constant flow that makes the difference between delivery of nutrients and their stagnation.

Just remember that when you are selecting a hydroponic pump that you do not want to create such a disturbance in the water bath that the plant roots will be disrupted. Other than that, when you are ready to consider the purchase of hydroponic water pump, and are not sure which one you should choose, it is preferable to go with one that is powerful rather than one that will not do a sufficient job. You can always create a barrier if the water is moving too rapidly.


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