Farms: Greenway Hydroponic Farm

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1. What are those gnat cards and where can I find them? I live in Texas and they are easily the biggest nuisance pest I've come across with very little success in eliminating them.
2. are those propagation trays available in the UK?
3. The downside of hydroponics is you will need to pay for "plant food" or nutrients and supplements which can be more costly.
4. Hydroponics is a great system but it have some disadvantage, you need to shop for some "plant food", nutrients and supplements that can be high-priced. Before making any hydroponics system, it is best to check out the benefit of aquaponics system, which can automate 95% of work.
5. hello! by any chance do you guys have any building plans for this greenhouse? Im interested in buiding one of those. Thanks in advance!
6. 10 Gallons = 38 Litres... Nice video... :) 
7. thank u for sharing, what an amazing set up. I wonder how much it would cost