Thanks so much for all that help

I really appreciate it and if I succeed it is due to your help and efforts
OK so I will get one of those lights for the 30 gal right? or do I need more? This is basically what is written about the RO system: The most modern and environmentally friendly method of water treatment for drinking water, aquariums, de mineralized water. Water is one of the most important components for the life of humans, animals and plants on earth. It is often contaminated by impurities, these impurities can cause health problems. Experience a whole new taste sensation of pure water using reverse osmosis system.
Reverse osmosis systems provide a convenient and effective way to produce a very clean water. In reverse osmosis drinking water is forced against a membrane that only pure water (permeate) can pass through the membrane, dissolved minerals and pollutants are discharged with the residual water
The quality and quantity of the osmosis water depends on the pressure and the temperature of the raw water. For most on the market of water treatment systems that work on ion-exchange basis, hardness-forming ions such as calcium with other ions, eg sodium exchanged. This results in a shift in the ion ratio, which can lead to unpredictable consequences in the aquarium, for example. In addition, such plants can be regenerated periodically with chemicals. Reverse osmosis is a natural process that removes the pollutants sure the dissolved salts + purely physical means from the water. What is needed is NO chemistry.
"WilTec" 3-stage reverse osmosis filter system TOP QUALITY, TOP FILTER (molecular filtration) - osmosis plant for water treatment for home
Our reverse osmosis system produces high-purity water. It is very inexpensive and easy to mount and use. The plant complies with the quality and filter performance offered more expensive reverse osmosis systems. It has a capacity of 190 liters per day. Our facility is the solution for nearly all water impurities.
There are all foreign materials are filtered up to 99%: heavy metals, pesticides, hormones, fungicides, drugs, nitrates, phosphates, chlorine, asbestos, limestone, radioactive isotopes, bacteria, protozoa, cysts, algae, spores, etc.
Specifications
First Filter stage 5 micron PP microfilter (Art. 50 832)
Second Filter stage granular activated carbon filter (art. 50 829)
Third Filter stage 50 GPD RO Membrane (Art. 50 835)
To improve the smell and taste the same order as (Option!)
4th Stage filter (Optional) PI activated carbon filter "Gourmet" (Art. 50 829)
use in strong smell or taste burden in addition! The 4th Filter stage corresponds to the second Filter stage.
Description: 3-stage RO system
Capacity 50 GPD = 190 liters / day
RO Membrane 50 GPD RO Membrane
Case 10 "(254mm) O-ring vessels
Connections Jaco
Water is not needed