It eliminates soil-borne pests and diseases and improves water and unimpeded plant nutrient uptake is achieved with the right feeding. Quite massive outputs of crop is achievable from small areas using hydroponic techniques. Home and commercial users of hydroponics have at their disposal a selection of different variations on the basic method.

These systems include the Rockwool Based Systems, Aeroponic Systems, the Ebb and Flow System, the multi- flow system and Continuous Drip Systems. As a hydroponic guide; systems come in all shapes and sizes and can be adapted for nearly any budget. 

Another well liked system is the Nutrient Film Technique (NFT). The seedlings grow to adulthood while held in troughs. The plant nourishing solution constantly trickle among the rootstock.
A reservoir with a pump that is submersible re-circulates the hydroponics solution on all the time, pumping the solution to the top of the troughs to trickle back through the system.

Film of nutrient methods are used at the large commercial scale overseas, in the UK, and in the United States To select the right trough size is crucial especially for the techniques using nutrient films.

The largest size systems while still not being very huge are using wider troughs etc.

Aeroponics is a system in which the plant’s roots are suspended in air They are great for growing herbs and leafy vegetables. Plant support is provided to the growing vegetables and flowers by neoprene inserts.

Different hold configurations in the top cover provide the proper spacing.

Aeroponic systems are also great propagators. The seedlings can be germinated in rockwool then transferred directly to the web pots.

Nasa scientific research has come up with the idea of aeroponics and it is becoming popular with visitors to their space and education centres.

The Europonic System is modeled after commercial systems that are used in Europe. The system starts with an entry level system offering three trays each holding eight plants. The system may also be expanded to five trays if desired.

A solution which contains nutrients is pump-flow delivered from a reservoir/tank to each emitter located at every plant. The solution trickles through the rockwool, over the roots, and back to the reservoir where it is re-circulated on a constant basis

Rockwool, or mineral wool, is the most popular and highly used hydroponic container gardening medium. It comprises spun material fibres and the high surface area provides good water retention and holding features. It can also be cut and formed into many shapes and sizes that allow many diverse growing applications.

Under the Eurponic system there are 2 rockwool slabs fitted ito each of the trays. Europonic Systems are good for the larger plants which have extensive systems of roots. Such systems are therefore good for plants like tomatoes, cucumber, and peppers, plus large flowering plants.

A 2 gallon reservoir is provided below each pot in the continuous drip type systems. This system is however not well suited to commercial growing requirements.
Ebb and flow systems prove perennially popular though in hyrdroponics applications as well.

Ebb and flow is good for peppers, small tomatoes,lettuce and flowers when potted. Ebb and flow systems may also be is used for the herbs for a herb garden. Ebb and flow systems do have their faults and one is how do you stop crystaline fertilizer salts gradually building up in the growing media?

As water loss occurs through evaporation salts are left as a residue and the concentration of these can add up over time and become toxic Regular flushing of the growing media with clean rainwater will also tend to avoid a repeat of this problem.